{"id":1025,"date":"2022-03-03T10:21:24","date_gmt":"2022-03-03T15:21:24","guid":{"rendered":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/?post_type=chapter&#038;p=1025"},"modified":"2026-03-05T15:36:36","modified_gmt":"2026-03-05T20:36:36","slug":"stream-a-creating-vectors-from-a-basemap-and-an-nts-map","status":"publish","type":"chapter","link":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/chapter\/stream-a-creating-vectors-from-a-basemap-and-an-nts-map\/","title":{"raw":"Stream A: Creating Vectors from a Basemap and an NTS Map","rendered":"Stream A: Creating Vectors from a Basemap and an NTS Map"},"content":{"raw":"<h1>Mapping a \u201cGhost Town\u201d<\/h1>\r\nIn Stream A, we will create points, lines, and polygons. We will create points for St. David\u2019s Presbyterian Church, the Holy Trinity Anglican Church, and the King\u2019s Playhouse. By mapping these points, we can show which structures were in place in Georgetown in 1991.\r\n\r\nIn Stream A, we will also digitize the main road leading into Georgetown (i.e., Kent Street) as a line. We will also digitize Kent Square as a polygon.\r\n\r\nBy completing Stream A, you will learn how to create all three types of vector data. You will see the few things that Georgetown, a \u201cghost town,\u201d still has to offer.\r\n<h1>Creating Vectors: Points, Lines, and Polygons<\/h1>\r\n<h2>Points<\/h2>\r\n<h3>Creating a New Shapefile Layer<\/h3>\r\nThe first type of vector data that we will create is point data. As you will recall from the beginning of this chapter, vector data comes in the form of a shapefile. So, to create our vector data, we will first create a new shapefile layer. To do so,\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Layer<\/li>\r\n \t<li style=\"font-weight: 400\">Hover over Create Layer<\/li>\r\n \t<li style=\"font-weight: 400\">Click New Shapefile Layer<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_915\" align=\"aligncenter\" width=\"835\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png\" alt=\"Figure 4.1. In the upper part of the screen toolbar selected is Layer, then Create Layer from the pop-up and from the second pop-up Shapefile Layer is selected.\" width=\"835\" height=\"680\" class=\"size-full wp-image-915\" \/> Figure 4.1[\/caption]\r\n\r\nFill out the following information in the dialogue box that appears:\r\n\r\nFile Name: ...QGIS\\Chapter4\\Vectors\\1991buildings.shp\r\n<ul>\r\n \t<li style=\"font-weight: 400\">First, you will have to create the folder named \"Vectors\" inside Chapter4. This should <strong>only have to happen once<\/strong> in this tutorial.<\/li>\r\n \t<li style=\"font-weight: 400\">To create the Vectors folder and save the shapefile in the correct location, click the ellipsis <strong>(. . .)<\/strong> to the right of the File Name field.<\/li>\r\n \t<li style=\"font-weight: 400\">Navigate to <strong>QGIS\\Chapter4<\/strong> folder.<\/li>\r\n \t<li>Click \"New Folder\" and name the folder <strong>Vectors<\/strong><\/li>\r\n \t<li style=\"font-weight: 400\">Enter <strong>1991buildings<\/strong> as a File Name, and then click Save.<\/li>\r\n<\/ul>\r\nFile Encoding: UTF-8\r\n\r\nGeometry Type: Point\r\n\r\nAdditional Dimensions: None\r\n\r\nUnderneath Additional Dimensions, we can also make sure the CRS is set to \u201cProject CRS: <strong>EPSG: 2954<\/strong>.\u201d\r\n\r\nUnder New Field, we can enter the following information:\r\n<ul>\r\n \t<li>Name: Name<\/li>\r\n \t<li>Type: TextString (in some versions \"Text Data\")<\/li>\r\n<\/ul>\r\nWe can leave the other settings.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Add to Fields List.<\/li>\r\n<\/ul>\r\n&nbsp;\r\n\r\nWe are creating this new field so that we can keep track of the names of the places for which we are creating points.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click OK<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_916\" align=\"aligncenter\" width=\"738\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003.png\" alt=\"Figure 4.2. This is the New Shapefile Layer screen where The values are set to \u201cFile Encoding: UTF-8\u201d, \u201cGeometry Type: Point\u201d, and \u201cAdditional Dimensions: None\u201d. The file is set to \u201cProject CRS: EPSG: 2954.\u201d under the Additional Dimensions setting area. Also, add to fields List is selected, found under the New Field section of the page. \" width=\"738\" height=\"647\" class=\"size-full wp-image-916\" \/> Figure 4.2[\/caption]\r\n\r\n[caption id=\"attachment_917\" align=\"aligncenter\" width=\"737\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005.png\" alt=\"Figure 4.3. New Shapefile Layer screen with all the changes added and a name option being typed in.\" width=\"737\" height=\"644\" class=\"size-full wp-image-917\" \/> Figure 4.3[\/caption]\r\n<h3>Adding Points to the Reference Map<\/h3>\r\n<h4>An Important Note about Scale<\/h4>\r\nBefore we add our points, we must take a moment to think about the scale of the NTS map. A point\u2019s accuracy decreases as the scale of the map decreases. The NTS map of Georgetown to which we will be adding our points was created to show the region around Georgetown and not to show Georgetown itself. In other words, it is a small-scale map, and it is not an urban map. When you add a point to a small-scale map, it will not be as accurate as if you added a point to a large-scale map.\r\n\r\nIn all forms of historical research, there are limitations. In our case, the scale of the NTS map limits us. We can use the NTS map to see a fairly accurate indication of where we should place a point, but we will have to use the modern-day basemap in conjunction with the NTS map to verify the point\u2019s proper location.\r\n\r\nTo do this, we first must be sure that the object that we are trying to represent with a point\u2014e.g., a building\u2014is still there on the basemap and has not changed location. We then identify the building on the NTS map. Before we commit to placing our point on the building\u2019s location on the NTS map, we verify the location of the point on the basemap. So, in other words, the NTS map is indicating to us a building\u2019s general location, and the basemap, which is set at a larger scale, is confirming the building\u2019s precise location. We will make our final decision as to where to place our point based on the location of the building on the basemap.\r\n\r\nThe small scale of the NTS map is important to keep in mind when working with it alone, as we are doing in Stream A. We want to use the basemap to make sure that the points we are adding are accurate. But the NTS map\u2019s scale is doubly important for users who will be completing Stream B. In Stream B, we work with the 1880 Meacham\u2019s Map of Georgetown, which is at a much larger scale. It is an urban map. So, in order to accurately compare points between the 1991 and 1880 maps, we must make sure that we used the same scale when mapping each.\r\n<h5>Adding the Points<\/h5>\r\nNow that we have our new shapefile created and we have the scale of the NTS map in mind, we can start to add our points to our 1991 map of Georgetown.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Toggle Editing<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_918\" align=\"aligncenter\" width=\"630\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007.png\" alt=\"Figure 4.4. The Toggle Editing button that looks like a pencil, in the control bar at the top of the screen is selected. \" width=\"630\" height=\"249\" class=\"size-full wp-image-918\" \/> Figure 4.4[\/caption]\r\n\r\n&nbsp;\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Add Point Feature<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_919\" align=\"aligncenter\" width=\"623\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009.png\" alt=\"Figure 4.5. The Add Point Feature button is now selected.\" width=\"623\" height=\"231\" class=\"size-full wp-image-919\" \/> Figure 4.5[\/caption]\r\n\r\n&nbsp;\r\n<h5>Adding a Point for St. David\u2019s Presbyterian Church<\/h5>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Identify St. David\u2019s Presbyterian Church. It is not named in the NTS map, but you will likely be able to find it by looking at the screenshot below. Its icon is drawn with a cross, and it is circled in blue in the screenshot.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_920\" align=\"aligncenter\" width=\"768\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011.png\" alt=\"Figure 4.6. With the NTS map in QGIS\u2019 Table of Contents circled is St. David\u2019s Presbyterian Church.\" width=\"768\" height=\"688\" class=\"size-full wp-image-920\" \/> Figure 4.6[\/caption]\r\n\r\n&nbsp;\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Before you place a point on this location on the NTS map, turn off the NTS map in QGIS\u2019 Table of Contents and turn on the OpenStreetMaps basemap. Use the basemap to verify the church\u2019s location. The church is represented on the basemap with a cross as well.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">You might have to zoom in a little to see the OpenStreetMap clearly. But this is a good thing, for, by making our scale larger, we are ensuring the point\u2019s accuracy.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_921\" align=\"aligncenter\" width=\"965\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013.png\" alt=\"Figure 4.7. With the NTS map off in QGIS\u2019 Table of Contents and the OpenStreetMaps basemap St. David\u2019s Presbyterian Church is circled in the image.\" width=\"965\" height=\"298\" class=\"size-full wp-image-921\" \/> Figure 4.7[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click on the location of the church on the OpenStreetMap to place our point.<\/li>\r\n \t<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">ID: 01\r\n<ul>\r\n \t<li style=\"font-weight: 400\">As we add more points to the 1991buildings layer, we will give each new point a unique ID number.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Name: St. David\u2019s Presbyterian Church<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Click OK.<\/li>\r\n<\/ul>\r\n&nbsp;\r\n\r\nYou will now see a point appear where St. David\u2019s Presbyterian Church is on the basemap. In my case, the point is green.\r\n\r\n[caption id=\"attachment_922\" align=\"aligncenter\" width=\"1164\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015.png\" alt=\"Figure 4.8. St. David\u2019s Presbyterian Church on the basemap with the point added. \" width=\"1164\" height=\"504\" class=\"size-full wp-image-922\" \/> Figure 4.8[\/caption]\r\n\r\n&nbsp;\r\n<div class=\"textbox shaded\"><strong>Note<\/strong>: you can change the colour of your point by using the Layer Styling panel to the right of your screen. Under Color, you can click the dropdown arrow to access other colours. If you do not see the Layer Styling panel, you can open it by clicking \u201cOpen the Layer Styling Panel\u201d or clicking F7 on your keyboard.<\/div>\r\n&nbsp;\r\n\r\n[caption id=\"attachment_923\" align=\"aligncenter\" width=\"313\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image017.png\" alt=\"Figure 4.9. In the Layers Panel, the pink paintbrush icon is selected to open the Layer Styling panel.\" width=\"313\" height=\"120\" class=\"size-full wp-image-923\" \/> Figure 4.9[\/caption]\r\n\r\n&nbsp;\r\n\r\n[caption id=\"attachment_924\" align=\"aligncenter\" width=\"454\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019.png\" alt=\"Figure 4.10. This shows the Layer styling Panel with the colour wheel options visible.\" width=\"454\" height=\"858\" class=\"size-full wp-image-924\" \/> Figure 4.10[\/caption]\r\n\r\n&nbsp;\r\n\r\nSince we used the basemap to decide the final location of the point, let\u2019s have a look at the location of the church on the NTS map to see how much more accurate we made our point\u2019s location by using the basemap.\r\n\r\nAs we can see in the following screenshot, the small scale of the NTS map makes its representation of the church\u2019s location a bit inaccurate. We ensured that our point was as accurate as possible by using the basemap.\r\n\r\n[caption id=\"attachment_925\" align=\"aligncenter\" width=\"874\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021.png\" alt=\"Figure 4.11. This shows the small scale of the NTS map with the new more accurate positioning on the church as a dot.\" width=\"874\" height=\"653\" class=\"size-full wp-image-925\" \/> Figure 4.11[\/caption]\r\n<h5>Adding a Point for the Holy Trinity Anglican Church<\/h5>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">As we did when mapping St. David\u2019s Presbyterian Church, we will first identify the Holy Trinity Anglican Church on the NTS map. It is not named, but you will likely be able to locate it based on the screenshot below. It is represented with a cross.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_926\" align=\"aligncenter\" width=\"847\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023.png\" alt=\"Figure 4.12. This identifies the Holy Trinity Anglican Church on the NTS map with a blue circle drawn around it.\" width=\"847\" height=\"705\" class=\"size-full wp-image-926\" \/> Figure 4.12[\/caption]\r\n\r\n&nbsp;\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Turn off the NTS map layer, and look at the basemap. Verify the church\u2019s location on the basemap. It is represented on the basemap with a cross.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_927\" align=\"aligncenter\" width=\"641\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025.png\" alt=\"Figure 4.13. This shows the OpenStreetMap Holy Trinity Anglican Church circled in blue marker.\" width=\"641\" height=\"352\" class=\"size-full wp-image-927\" \/> Figure 4.13[\/caption]\r\n\r\n&nbsp;\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click on the location of the church on the OpenStreetMap to place our point.<\/li>\r\n \t<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">ID: 02<\/li>\r\n \t<li style=\"font-weight: 400\">Name: Holy Trinity Anglican Church<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Click OK.<\/li>\r\n<\/ul>\r\nYou will now see a point appear where the Holy Trinity Anglican Church is on the basemap.\r\n\r\n[caption id=\"attachment_928\" align=\"aligncenter\" width=\"1023\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027.png\" alt=\"Figure 4.14. This is the OpenStreetMap with both the St. David\u2019s Presbyterian Church and Holy Trinity Anglican Church marked with dots.\" width=\"1023\" height=\"656\" class=\"size-full wp-image-928\" \/> Figure 4.14[\/caption]\r\n\r\n&nbsp;\r\n<h5>Adding a Point for the King\u2019s Playhouse<\/h5>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">As we did when mapping the two churches, we will first identify the King\u2019s Playhouse on the NTS map. It is not named, but you will likely be able to locate it based on the screenshot below. There are two squares on the corner of Kent Street and Grafton Street. The King\u2019s Playhouse is the one the furthest to the left.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_929\" align=\"aligncenter\" width=\"844\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029.png\" alt=\"Figure 4.15. On the NTS map both churches are marked and the King\u2019s Playhouse is marked with a blue circle around it.\" width=\"844\" height=\"666\" class=\"size-full wp-image-929\" \/> Figure 4.15[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Turn off the NTS map layer, and look at the basemap. Verify the King\u2019s Playhouse location on the basemap. You will be able to see the Playhouse\u2019s large footprint on the corner of Kent Street and Grafton Street.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_930\" align=\"aligncenter\" width=\"1041\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031.png\" alt=\"Figure 4.16. The OpenStreetMap with the King\u2019s Playhouse marked with a blue circle around it.\" width=\"1041\" height=\"547\" class=\"size-full wp-image-930\" \/> Figure 4.16[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click on the location of the Playhouse on the OpenStreetMap to place our point.<\/li>\r\n \t<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">ID: 03<\/li>\r\n \t<li style=\"font-weight: 400\">Name: King\u2019s Playhouse<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Click OK.<\/li>\r\n<\/ul>\r\nYou will now see a point appear where the King\u2019s Playhouse is on the basemap.\r\n\r\n[caption id=\"attachment_931\" align=\"aligncenter\" width=\"1173\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033.png\" alt=\"Figure 4.17. The OpenStreetMap with the King\u2019s Playhouse marked with a dot and both churches also marked.\" width=\"1173\" height=\"676\" class=\"size-full wp-image-931\" \/> Figure 4.17[\/caption]\r\n<h4>Saving the Vector Data<\/h4>\r\nAfter we have created some vector data, we need to save it. Saving vector data is a separate process from saving the QGIS project itself. While it is also a good idea to continuously click Project &gt; Save, after adding some vector data, we will also click the \u201cSave Layer Edits\u201d button.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click the \u201cSave Layer Edits\u201d button.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_932\" align=\"aligncenter\" width=\"149\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png\" alt=\"Figure 4.18. This shows the Save Layer Edits button which looks like a printer with a pencil icon. \" width=\"149\" height=\"41\" class=\"size-full wp-image-932\" \/> Figure 4.18[\/caption]\r\n\r\n&nbsp;\r\n\r\n&nbsp;\r\n<h2>Line<\/h2>\r\n<h3>Creating a New Shapefile Layer<\/h3>\r\nOnce again, we will first create a new shapefile:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Layer<\/li>\r\n \t<li style=\"font-weight: 400\">Hover over Create Layer<\/li>\r\n \t<li style=\"font-weight: 400\">Click New Shapefile Layer<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_915\" align=\"aligncenter\" width=\"835\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png\" alt=\"Figure 4.1. In the upper part of the screen toolbar selected is Layer, then Create Layer from the pop-up and from the second pop-up Shapefile Layer is selected.\" width=\"835\" height=\"680\" class=\"size-full wp-image-915\" \/> Figure 4.19[\/caption]\r\n\r\nFill out the following information in the dialogue box that appears:\r\n\r\nFile Name: ...QGIS\\Chapter4\\Vectors\\1991road.shp\r\n<ul>\r\n \t<li style=\"font-weight: 400\">To save our shapefile in the correct location, click the ellipsis to the right of the File Name field. Navigate to QGIS\\Chapter4\\Vectors. <strong>Enter 1991road<\/strong> as the File Name, and then click Save.<\/li>\r\n<\/ul>\r\nFile Encoding: UTF-8\r\n\r\nGeometry Type: Line\r\n\r\nAdditional Dimensions: None\r\n\r\nUnderneath Additional Dimensions, we can also make sure the CRS is set to \u201cProject CRS: <strong>EPSG: 2954<\/strong>.\u201d\r\n\r\nUnder New Field, we can enter the following information:\r\n<ul>\r\n \t<li>Name: Name<\/li>\r\n \t<li>Type: TextString (in some versions \"Text Data\")<\/li>\r\n<\/ul>\r\nWe can leave the other settings.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Add to Fields List.<\/li>\r\n<\/ul>\r\nWe are creating this new field so that we can keep track of the names of the places for which we are creating lines.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click OK<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_933\" align=\"aligncenter\" width=\"735\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038.png\" alt=\"Figure 4.20. In the New Shapefile Layer with the values: File Encoding: UTF-8, Geometry Type: Line.\" width=\"735\" height=\"646\" class=\"wp-image-933 size-full\" \/> Figure 4.20[\/caption]\r\n\r\n[caption id=\"attachment_934\" align=\"aligncenter\" width=\"737\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040.png\" alt=\"Figure 4.21. This shows the New Shapefile Layer with the values, Additional Dimensions: None. Under New Field the values are: Name: Name, and Type: Text Data. In the fields list it now shows two: id and Name.\" width=\"737\" height=\"645\" class=\"size-full wp-image-934\" \/> Figure 4.21[\/caption]\r\n\r\n&nbsp;\r\n<h3>Adding a Line to the Reference Map<\/h3>\r\n<h4>An Important Note about Scale<\/h4>\r\nAs we did when we added the points, we must consider the small scale of the NTS map when we add our line in this step. We will first identify the road for which we want to create a line on the NTS map. We will then turn off the NTS map and check the location of the same road on the basemap.\r\n<h4>Adding the Line<\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Toggle Editing<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_935\" align=\"aligncenter\" width=\"627\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042.png\" alt=\"Figure 4.22. The upper section of the page tool bar the toggle editing icon that looks like a pencil is selected.\" width=\"627\" height=\"178\" class=\"size-full wp-image-935\" \/> Figure 4.22[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Add Line Feature<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_936\" align=\"aligncenter\" width=\"628\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044.png\" alt=\"Figure 4.23. The Add Line Feature is selected, this icon looks like a V line with a star in the corner. \" width=\"628\" height=\"213\" class=\"size-full wp-image-936\" \/> Figure 4.23[\/caption]\r\n<h5>Adding a Line for Kent Street<\/h5>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Identify where Kent Street and North Street intersect on the NTS map.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_937\" align=\"aligncenter\" width=\"921\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046.png\" alt=\"Figure 4.24. On the NTS map the intersection at Kent St. and North St. is circled with a blue marker.\" width=\"921\" height=\"770\" class=\"size-full wp-image-937\" \/> Figure 4.24[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Identify where Kent Street and Water Street intersect on the NTS map.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_938\" align=\"aligncenter\" width=\"921\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048.png\" alt=\"Figure 4.25. This shows where Kent St. and Water St. intersect on the NTS map with a blue circle around the intersection.\" width=\"921\" height=\"770\" class=\"size-full wp-image-938\" \/> Figure 4.25[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Turn off the NTS layer and look at the base map. Identify the same two points on the base map.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_939\" align=\"aligncenter\" width=\"1006\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050.png\" alt=\"Figure 4.26. On the OpenStreetMap the intersections at Kent St. and Water St., and Kent St. and North St.are circled in blue marker. \" width=\"1006\" height=\"733\" class=\"size-full wp-image-939\" \/> Figure 4.26[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Left-click once at the intersection of Kent Street and North Street.<\/li>\r\n \t<li style=\"font-weight: 400\">Move your mouse to the intersection of Kent Street and Water Street and left-click again.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Although it is not necessary in this case, you could continue to left-click at various other points to add extra segments to your line.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Right-click to complete the line.<\/li>\r\n \t<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">ID: 01<\/li>\r\n \t<li style=\"font-weight: 400\">Name: Kent Street<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Click OK.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_940\" align=\"aligncenter\" width=\"907\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052.png\" alt=\"Figure 4.27. A red line along Kent St. is now rendered; however, it is difficult to view on the map.\" width=\"907\" height=\"697\" class=\"size-full wp-image-940\" \/> Figure 4.27[\/caption]\r\n\r\nThe red colour of the line we just created renders it difficult to see among the red in the NTS map.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">In the Layer Styling panel to the right of your screen, click the Color dropdown menu and change the line\u2019s colour to a purple or blue.<\/li>\r\n \t<li style=\"font-weight: 400\">Change the line\u2019s Width to 1.0 as well.<\/li>\r\n \t<li style=\"font-weight: 400\">Click Apply<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_941\" align=\"aligncenter\" width=\"305\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image054.png\" alt=\"Figure 4.28. In the Layer Styling section the line colour is changed to blue to make it more visible.\" width=\"305\" height=\"865\" class=\"size-full wp-image-941\" \/> Figure 4.28[\/caption]\r\n\r\nThe resulting line is much easier to see:\r\n\r\n[caption id=\"attachment_942\" align=\"aligncenter\" width=\"871\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056.png\" alt=\"Figure 4.29. A blue line along Kent St. is rendered on the map.\" width=\"871\" height=\"687\" class=\"size-full wp-image-942\" \/> Figure 4.29[\/caption]\r\n\r\nLooking at our line with the NTS layer turned on proves once again that we were able to add more accurate vector data by using the larger-scale basemap than the NTS map.\r\n<h4>Saving the Vector Data<\/h4>\r\nAs always, let\u2019s save the vector data that we just created.\r\n<ul>\r\n \t<li>Click the \u201cSave Layer Edits\u201d button.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_932\" align=\"aligncenter\" width=\"149\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png\" alt=\"Figure 4.18. This shows the Save Layer Edits button which looks like a printer with a pencil icon. \" width=\"149\" height=\"41\" class=\"size-full wp-image-932\" \/> Figure 4.30[\/caption]\r\n<h2>Polygon<\/h2>\r\n<h3>Creating a New Shapefile<\/h3>\r\nOnce again, we will first create a new shapefile:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Layer<\/li>\r\n \t<li style=\"font-weight: 400\">Hover over Create Layer<\/li>\r\n \t<li style=\"font-weight: 400\">Click New Shapefile Layer<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_915\" align=\"aligncenter\" width=\"835\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png\" alt=\"Figure 4.1. In the upper part of the screen toolbar selected is Layer, then Create Layer from the pop-up and from the second pop-up Shapefile Layer is selected.\" width=\"835\" height=\"680\" class=\"size-full wp-image-915\" \/> Figure 4.31[\/caption]\r\n\r\n&nbsp;\r\n\r\nFill out the following information in the dialogue box that appears:\r\n\r\nFile Name: ...QGIS\\Chapter4\\Vectors\\1991kentsquare.shp\r\n<ul>\r\n \t<li style=\"font-weight: 400\">To save our shapefile in the correct location, click the ellipsis to the right of the File Name field. Navigate to QGIS\\Chapter4\\Vectors. Enter <strong>1991kentsquare<\/strong> as the File Name, and then click Save.<\/li>\r\n<\/ul>\r\nFile Encoding: UTF-8\r\n\r\nGeometry Type: Polygon\r\n\r\nAdditional Dimensions: None\r\n\r\nUnderneath Additional Dimensions, we can also make sure the CRS is set to \u201cProject CRS: <strong>EPSG: 2954<\/strong>.\u201d\r\n\r\nUnder New Field, we can enter the following information:\r\n<ul>\r\n \t<li>Name: Name<\/li>\r\n \t<li>Type: TextString (in some versions \"Text Data\")<\/li>\r\n<\/ul>\r\nWe can leave the other settings.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Add to Fields List.<\/li>\r\n<\/ul>\r\nWe are creating this new field so that we can keep track of the names of the places for which we are creating polygons.\r\n\r\n[caption id=\"attachment_943\" align=\"aligncenter\" width=\"735\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059.png\" alt=\"Figure 4.32. In the New Shapefile Layer with the values: File Encoding: UTF-8, Geometry Type: Polygon. \" width=\"735\" height=\"643\" class=\"size-full wp-image-943\" \/> Figure 4.32[\/caption]\r\n\r\n[caption id=\"attachment_944\" align=\"aligncenter\" width=\"734\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061.png\" alt=\"Figure 4.33. This shows the New Shapefile Layer with the values, Additional Dimensions: None. Under New Field the values are: Name: Name, and Type: Text Data. In the fields list it now shows two: id and Name. \" width=\"734\" height=\"642\" class=\"size-full wp-image-944\" \/> Figure 4.33[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click OK<\/li>\r\n<\/ul>\r\n&nbsp;\r\n\r\n&nbsp;\r\n<h3>Adding a Polygon to the Reference Map<\/h3>\r\n<h4>An Important Note about Scale<\/h4>\r\nAs we did when we added the points and the line, we must consider the small scale of the NTS map when we add our polygon in this step. We will first identify the area for which we want to create a polygon on the NTS map. We will then turn off the NTS map and check the location of the same area on the basemap.\r\n<h4>Adding the Polygon<\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Toggle Editing<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_945\" align=\"aligncenter\" width=\"627\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063.png\" alt=\"Figure 4.34. The upper section of the page tool bar the toggle editing icon that looks like a pencil is selected.\" width=\"627\" height=\"272\" class=\"size-full wp-image-945\" \/> Figure 4.34[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click Add Polygon Feature<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_946\" align=\"aligncenter\" width=\"657\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065.png\" alt=\"Figure 4.35. The Add Polygon Feature is selected, this icon looks like a kidney bean shape with a star in the corner.\" width=\"657\" height=\"265\" class=\"size-full wp-image-946\" \/> Figure 4.35[\/caption]\r\n<h5>Adding a Polygon for Kent Square<\/h5>\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Identify Kent Square on the NTS map.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_947\" align=\"aligncenter\" width=\"919\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067.png\" alt=\"Figure 4.36. Kent Square on the NTS map is shown with a blue box around the perimeter.\" width=\"919\" height=\"671\" class=\"size-full wp-image-947\" \/> Figure 4.36. Kent Square on the NTS map is shown with a blue box around the perimeter.[\/caption]\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Turn off the NTS layer and identify Kent Square on the basemap.<\/li>\r\n<\/ul>\r\n<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069.png\" alt=\"Figure 4.37. On the OpenStreetMap the blue box that was on the NTS map is visible\" width=\"755\" height=\"529\" class=\"alignnone wp-image-948 size-full\" style=\"margin-bottom: -1ex\" \/>Figure 4.37\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Left-click once at the corner of George Street and Fitzroy Street.<\/li>\r\n \t<li style=\"font-weight: 400\">Move your mouse to the corner of George Street and Victoria Street and left-click again.<\/li>\r\n \t<li style=\"font-weight: 400\">Move your mouse to the corner of Victoria Street and Grafton Street and left-click again.<\/li>\r\n \t<li style=\"font-weight: 400\">Move your mouse to the corner of Grafton Street and Fitzroy Street and left-click again.<\/li>\r\n \t<li style=\"font-weight: 400\">Right-click to complete the line.<\/li>\r\n \t<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\r\n<ul>\r\n \t<li style=\"font-weight: 400\">ID: 01<\/li>\r\n \t<li style=\"font-weight: 400\">Name: Kent Square<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li style=\"font-weight: 400\">Click OK.<\/li>\r\n<\/ul>\r\nThe resulting polygon hides part of the road and buildings layers that we previously created.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">In the Table of Contents, drag the 1991kentsquare layer <strong>beneath<\/strong> the 1991buildings layer.<\/li>\r\n \t<li style=\"font-weight: 400\">In the Layer Styling panel to the right of your screen, change the Opacity to 50.0%.<\/li>\r\n<\/ul>\r\nHere is the result:\r\n\r\n[caption id=\"attachment_949\" align=\"aligncenter\" width=\"938\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071.png\" alt=\"Figure 4.38. The blue box on the perimeter of Kent Square is now shaded in and fit to the OpenStreetMap image of Kent Square with the blue line down Kent St. visible going through the Square. \" width=\"938\" height=\"607\" class=\"size-full wp-image-949\" \/> Figure 4.38[\/caption]\r\n\r\nIf we turn on the NTS map, we can see that we placed the polygon in a much more accurate position by using the basemap.\r\n\r\n[caption id=\"attachment_950\" align=\"aligncenter\" width=\"1046\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073.png\" alt=\"Figure 4.39. The new Kent Square is visible on the NTS map, with the blue line showing the location of Kent St. still visible.\" width=\"1046\" height=\"772\" class=\"size-full wp-image-950\" \/> Figure 4.39[\/caption]\r\n<h4>Saving the Vector Data<\/h4>\r\nAs always, let\u2019s save the vector data that we just created.\r\n<ul>\r\n \t<li style=\"font-weight: 400\">Click the \u201cSave Layer Edits\u201d button.<\/li>\r\n<\/ul>\r\n[caption id=\"attachment_932\" align=\"aligncenter\" width=\"149\"]<img src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png\" alt=\"Figure 4.18. This shows the Save Layer Edits button which looks like a printer with a pencil icon.\" width=\"149\" height=\"41\" class=\"size-full wp-image-932\" \/> Figure 4.40[\/caption]\r\n\r\n&nbsp;","rendered":"<h1>Mapping a \u201cGhost Town\u201d<\/h1>\n<p>In Stream A, we will create points, lines, and polygons. We will create points for St. David\u2019s Presbyterian Church, the Holy Trinity Anglican Church, and the King\u2019s Playhouse. By mapping these points, we can show which structures were in place in Georgetown in 1991.<\/p>\n<p>In Stream A, we will also digitize the main road leading into Georgetown (i.e., Kent Street) as a line. We will also digitize Kent Square as a polygon.<\/p>\n<p>By completing Stream A, you will learn how to create all three types of vector data. You will see the few things that Georgetown, a \u201cghost town,\u201d still has to offer.<\/p>\n<h1>Creating Vectors: Points, Lines, and Polygons<\/h1>\n<h2>Points<\/h2>\n<h3>Creating a New Shapefile Layer<\/h3>\n<p>The first type of vector data that we will create is point data. As you will recall from the beginning of this chapter, vector data comes in the form of a shapefile. So, to create our vector data, we will first create a new shapefile layer. To do so,<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Layer<\/li>\n<li style=\"font-weight: 400\">Hover over Create Layer<\/li>\n<li style=\"font-weight: 400\">Click New Shapefile Layer<\/li>\n<\/ul>\n<figure id=\"attachment_915\" aria-describedby=\"caption-attachment-915\" style=\"width: 835px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png\" alt=\"Figure 4.1. In the upper part of the screen toolbar selected is Layer, then Create Layer from the pop-up and from the second pop-up Shapefile Layer is selected.\" width=\"835\" height=\"680\" class=\"size-full wp-image-915\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png 835w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-300x244.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-768x625.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-65x53.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-225x183.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-350x285.png 350w\" sizes=\"auto, (max-width: 835px) 100vw, 835px\" \/><figcaption id=\"caption-attachment-915\" class=\"wp-caption-text\">Figure 4.1<\/figcaption><\/figure>\n<p>Fill out the following information in the dialogue box that appears:<\/p>\n<p>File Name: &#8230;QGIS\\Chapter4\\Vectors\\1991buildings.shp<\/p>\n<ul>\n<li style=\"font-weight: 400\">First, you will have to create the folder named &#8220;Vectors&#8221; inside Chapter4. This should <strong>only have to happen once<\/strong> in this tutorial.<\/li>\n<li style=\"font-weight: 400\">To create the Vectors folder and save the shapefile in the correct location, click the ellipsis <strong>(. . .)<\/strong> to the right of the File Name field.<\/li>\n<li style=\"font-weight: 400\">Navigate to <strong>QGIS\\Chapter4<\/strong> folder.<\/li>\n<li>Click &#8220;New Folder&#8221; and name the folder <strong>Vectors<\/strong><\/li>\n<li style=\"font-weight: 400\">Enter <strong>1991buildings<\/strong> as a File Name, and then click Save.<\/li>\n<\/ul>\n<p>File Encoding: UTF-8<\/p>\n<p>Geometry Type: Point<\/p>\n<p>Additional Dimensions: None<\/p>\n<p>Underneath Additional Dimensions, we can also make sure the CRS is set to \u201cProject CRS: <strong>EPSG: 2954<\/strong>.\u201d<\/p>\n<p>Under New Field, we can enter the following information:<\/p>\n<ul>\n<li>Name: Name<\/li>\n<li>Type: TextString (in some versions &#8220;Text Data&#8221;)<\/li>\n<\/ul>\n<p>We can leave the other settings.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Add to Fields List.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>We are creating this new field so that we can keep track of the names of the places for which we are creating points.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click OK<\/li>\n<\/ul>\n<figure id=\"attachment_916\" aria-describedby=\"caption-attachment-916\" style=\"width: 738px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003.png\" alt=\"Figure 4.2. This is the New Shapefile Layer screen where The values are set to \u201cFile Encoding: UTF-8\u201d, \u201cGeometry Type: Point\u201d, and \u201cAdditional Dimensions: None\u201d. The file is set to \u201cProject CRS: EPSG: 2954.\u201d under the Additional Dimensions setting area. Also, add to fields List is selected, found under the New Field section of the page.\" width=\"738\" height=\"647\" class=\"size-full wp-image-916\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003.png 738w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003-300x263.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003-65x57.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003-225x197.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image003-350x307.png 350w\" sizes=\"auto, (max-width: 738px) 100vw, 738px\" \/><figcaption id=\"caption-attachment-916\" class=\"wp-caption-text\">Figure 4.2<\/figcaption><\/figure>\n<figure id=\"attachment_917\" aria-describedby=\"caption-attachment-917\" style=\"width: 737px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005.png\" alt=\"Figure 4.3. New Shapefile Layer screen with all the changes added and a name option being typed in.\" width=\"737\" height=\"644\" class=\"size-full wp-image-917\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005.png 737w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005-300x262.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005-65x57.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005-225x197.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image005-350x306.png 350w\" sizes=\"auto, (max-width: 737px) 100vw, 737px\" \/><figcaption id=\"caption-attachment-917\" class=\"wp-caption-text\">Figure 4.3<\/figcaption><\/figure>\n<h3>Adding Points to the Reference Map<\/h3>\n<h4>An Important Note about Scale<\/h4>\n<p>Before we add our points, we must take a moment to think about the scale of the NTS map. A point\u2019s accuracy decreases as the scale of the map decreases. The NTS map of Georgetown to which we will be adding our points was created to show the region around Georgetown and not to show Georgetown itself. In other words, it is a small-scale map, and it is not an urban map. When you add a point to a small-scale map, it will not be as accurate as if you added a point to a large-scale map.<\/p>\n<p>In all forms of historical research, there are limitations. In our case, the scale of the NTS map limits us. We can use the NTS map to see a fairly accurate indication of where we should place a point, but we will have to use the modern-day basemap in conjunction with the NTS map to verify the point\u2019s proper location.<\/p>\n<p>To do this, we first must be sure that the object that we are trying to represent with a point\u2014e.g., a building\u2014is still there on the basemap and has not changed location. We then identify the building on the NTS map. Before we commit to placing our point on the building\u2019s location on the NTS map, we verify the location of the point on the basemap. So, in other words, the NTS map is indicating to us a building\u2019s general location, and the basemap, which is set at a larger scale, is confirming the building\u2019s precise location. We will make our final decision as to where to place our point based on the location of the building on the basemap.<\/p>\n<p>The small scale of the NTS map is important to keep in mind when working with it alone, as we are doing in Stream A. We want to use the basemap to make sure that the points we are adding are accurate. But the NTS map\u2019s scale is doubly important for users who will be completing Stream B. In Stream B, we work with the 1880 Meacham\u2019s Map of Georgetown, which is at a much larger scale. It is an urban map. So, in order to accurately compare points between the 1991 and 1880 maps, we must make sure that we used the same scale when mapping each.<\/p>\n<h5>Adding the Points<\/h5>\n<p>Now that we have our new shapefile created and we have the scale of the NTS map in mind, we can start to add our points to our 1991 map of Georgetown.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Toggle Editing<\/li>\n<\/ul>\n<figure id=\"attachment_918\" aria-describedby=\"caption-attachment-918\" style=\"width: 630px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007.png\" alt=\"Figure 4.4. The Toggle Editing button that looks like a pencil, in the control bar at the top of the screen is selected.\" width=\"630\" height=\"249\" class=\"size-full wp-image-918\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007.png 630w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007-300x119.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007-65x26.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007-225x89.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image007-350x138.png 350w\" sizes=\"auto, (max-width: 630px) 100vw, 630px\" \/><figcaption id=\"caption-attachment-918\" class=\"wp-caption-text\">Figure 4.4<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Add Point Feature<\/li>\n<\/ul>\n<figure id=\"attachment_919\" aria-describedby=\"caption-attachment-919\" style=\"width: 623px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009.png\" alt=\"Figure 4.5. The Add Point Feature button is now selected.\" width=\"623\" height=\"231\" class=\"size-full wp-image-919\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009.png 623w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009-300x111.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009-65x24.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009-225x83.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image009-350x130.png 350w\" sizes=\"auto, (max-width: 623px) 100vw, 623px\" \/><figcaption id=\"caption-attachment-919\" class=\"wp-caption-text\">Figure 4.5<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<h5>Adding a Point for St. David\u2019s Presbyterian Church<\/h5>\n<ul>\n<li style=\"font-weight: 400\">Identify St. David\u2019s Presbyterian Church. It is not named in the NTS map, but you will likely be able to find it by looking at the screenshot below. Its icon is drawn with a cross, and it is circled in blue in the screenshot.<\/li>\n<\/ul>\n<figure id=\"attachment_920\" aria-describedby=\"caption-attachment-920\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011.png\" alt=\"Figure 4.6. With the NTS map in QGIS\u2019 Table of Contents circled is St. David\u2019s Presbyterian Church.\" width=\"768\" height=\"688\" class=\"size-full wp-image-920\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011-300x269.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011-65x58.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011-225x202.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image011-350x314.png 350w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><figcaption id=\"caption-attachment-920\" class=\"wp-caption-text\">Figure 4.6<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400\">Before you place a point on this location on the NTS map, turn off the NTS map in QGIS\u2019 Table of Contents and turn on the OpenStreetMaps basemap. Use the basemap to verify the church\u2019s location. The church is represented on the basemap with a cross as well.\n<ul>\n<li style=\"font-weight: 400\">You might have to zoom in a little to see the OpenStreetMap clearly. But this is a good thing, for, by making our scale larger, we are ensuring the point\u2019s accuracy.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<figure id=\"attachment_921\" aria-describedby=\"caption-attachment-921\" style=\"width: 965px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013.png\" alt=\"Figure 4.7. With the NTS map off in QGIS\u2019 Table of Contents and the OpenStreetMaps basemap St. David\u2019s Presbyterian Church is circled in the image.\" width=\"965\" height=\"298\" class=\"size-full wp-image-921\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013.png 965w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013-300x93.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013-768x237.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013-65x20.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013-225x69.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image013-350x108.png 350w\" sizes=\"auto, (max-width: 965px) 100vw, 965px\" \/><figcaption id=\"caption-attachment-921\" class=\"wp-caption-text\">Figure 4.7<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Click on the location of the church on the OpenStreetMap to place our point.<\/li>\n<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\n<ul>\n<li style=\"font-weight: 400\">ID: 01\n<ul>\n<li style=\"font-weight: 400\">As we add more points to the 1991buildings layer, we will give each new point a unique ID number.<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Name: St. David\u2019s Presbyterian Church<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Click OK.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>You will now see a point appear where St. David\u2019s Presbyterian Church is on the basemap. In my case, the point is green.<\/p>\n<figure id=\"attachment_922\" aria-describedby=\"caption-attachment-922\" style=\"width: 1164px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015.png\" alt=\"Figure 4.8. St. David\u2019s Presbyterian Church on the basemap with the point added.\" width=\"1164\" height=\"504\" class=\"size-full wp-image-922\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015.png 1164w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015-300x130.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015-1024x443.png 1024w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015-768x333.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015-65x28.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015-225x97.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image015-350x152.png 350w\" sizes=\"auto, (max-width: 1164px) 100vw, 1164px\" \/><figcaption id=\"caption-attachment-922\" class=\"wp-caption-text\">Figure 4.8<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<div class=\"textbox shaded\"><strong>Note<\/strong>: you can change the colour of your point by using the Layer Styling panel to the right of your screen. Under Color, you can click the dropdown arrow to access other colours. If you do not see the Layer Styling panel, you can open it by clicking \u201cOpen the Layer Styling Panel\u201d or clicking F7 on your keyboard.<\/div>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_923\" aria-describedby=\"caption-attachment-923\" style=\"width: 313px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image017.png\" alt=\"Figure 4.9. In the Layers Panel, the pink paintbrush icon is selected to open the Layer Styling panel.\" width=\"313\" height=\"120\" class=\"size-full wp-image-923\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image017.png 313w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image017-300x115.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image017-65x25.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image017-225x86.png 225w\" sizes=\"auto, (max-width: 313px) 100vw, 313px\" \/><figcaption id=\"caption-attachment-923\" class=\"wp-caption-text\">Figure 4.9<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_924\" aria-describedby=\"caption-attachment-924\" style=\"width: 454px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019.png\" alt=\"Figure 4.10. This shows the Layer styling Panel with the colour wheel options visible.\" width=\"454\" height=\"858\" class=\"size-full wp-image-924\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019.png 454w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019-159x300.png 159w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019-65x123.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019-225x425.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image019-350x661.png 350w\" sizes=\"auto, (max-width: 454px) 100vw, 454px\" \/><figcaption id=\"caption-attachment-924\" class=\"wp-caption-text\">Figure 4.10<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>Since we used the basemap to decide the final location of the point, let\u2019s have a look at the location of the church on the NTS map to see how much more accurate we made our point\u2019s location by using the basemap.<\/p>\n<p>As we can see in the following screenshot, the small scale of the NTS map makes its representation of the church\u2019s location a bit inaccurate. We ensured that our point was as accurate as possible by using the basemap.<\/p>\n<figure id=\"attachment_925\" aria-describedby=\"caption-attachment-925\" style=\"width: 874px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021.png\" alt=\"Figure 4.11. This shows the small scale of the NTS map with the new more accurate positioning on the church as a dot.\" width=\"874\" height=\"653\" class=\"size-full wp-image-925\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021.png 874w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021-300x224.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021-768x574.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021-65x49.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021-225x168.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image021-350x261.png 350w\" sizes=\"auto, (max-width: 874px) 100vw, 874px\" \/><figcaption id=\"caption-attachment-925\" class=\"wp-caption-text\">Figure 4.11<\/figcaption><\/figure>\n<h5>Adding a Point for the Holy Trinity Anglican Church<\/h5>\n<ul>\n<li style=\"font-weight: 400\">As we did when mapping St. David\u2019s Presbyterian Church, we will first identify the Holy Trinity Anglican Church on the NTS map. It is not named, but you will likely be able to locate it based on the screenshot below. It is represented with a cross.<\/li>\n<\/ul>\n<figure id=\"attachment_926\" aria-describedby=\"caption-attachment-926\" style=\"width: 847px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023.png\" alt=\"Figure 4.12. This identifies the Holy Trinity Anglican Church on the NTS map with a blue circle drawn around it.\" width=\"847\" height=\"705\" class=\"size-full wp-image-926\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023.png 847w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023-300x250.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023-768x639.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023-65x54.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023-225x187.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image023-350x291.png 350w\" sizes=\"auto, (max-width: 847px) 100vw, 847px\" \/><figcaption id=\"caption-attachment-926\" class=\"wp-caption-text\">Figure 4.12<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400\">Turn off the NTS map layer, and look at the basemap. Verify the church\u2019s location on the basemap. It is represented on the basemap with a cross.<\/li>\n<\/ul>\n<figure id=\"attachment_927\" aria-describedby=\"caption-attachment-927\" style=\"width: 641px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025.png\" alt=\"Figure 4.13. This shows the OpenStreetMap Holy Trinity Anglican Church circled in blue marker.\" width=\"641\" height=\"352\" class=\"size-full wp-image-927\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025.png 641w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025-300x165.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025-65x36.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025-225x124.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image025-350x192.png 350w\" sizes=\"auto, (max-width: 641px) 100vw, 641px\" \/><figcaption id=\"caption-attachment-927\" class=\"wp-caption-text\">Figure 4.13<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click on the location of the church on the OpenStreetMap to place our point.<\/li>\n<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\n<ul>\n<li style=\"font-weight: 400\">ID: 02<\/li>\n<li style=\"font-weight: 400\">Name: Holy Trinity Anglican Church<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Click OK.<\/li>\n<\/ul>\n<p>You will now see a point appear where the Holy Trinity Anglican Church is on the basemap.<\/p>\n<figure id=\"attachment_928\" aria-describedby=\"caption-attachment-928\" style=\"width: 1023px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027.png\" alt=\"Figure 4.14. This is the OpenStreetMap with both the St. David\u2019s Presbyterian Church and Holy Trinity Anglican Church marked with dots.\" width=\"1023\" height=\"656\" class=\"size-full wp-image-928\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027.png 1023w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027-300x192.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027-768x492.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027-65x42.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027-225x144.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image027-350x224.png 350w\" sizes=\"auto, (max-width: 1023px) 100vw, 1023px\" \/><figcaption id=\"caption-attachment-928\" class=\"wp-caption-text\">Figure 4.14<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<h5>Adding a Point for the King\u2019s Playhouse<\/h5>\n<ul>\n<li style=\"font-weight: 400\">As we did when mapping the two churches, we will first identify the King\u2019s Playhouse on the NTS map. It is not named, but you will likely be able to locate it based on the screenshot below. There are two squares on the corner of Kent Street and Grafton Street. The King\u2019s Playhouse is the one the furthest to the left.<\/li>\n<\/ul>\n<figure id=\"attachment_929\" aria-describedby=\"caption-attachment-929\" style=\"width: 844px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029.png\" alt=\"Figure 4.15. On the NTS map both churches are marked and the King\u2019s Playhouse is marked with a blue circle around it.\" width=\"844\" height=\"666\" class=\"size-full wp-image-929\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029.png 844w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029-300x237.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029-768x606.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029-65x51.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029-225x178.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image029-350x276.png 350w\" sizes=\"auto, (max-width: 844px) 100vw, 844px\" \/><figcaption id=\"caption-attachment-929\" class=\"wp-caption-text\">Figure 4.15<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Turn off the NTS map layer, and look at the basemap. Verify the King\u2019s Playhouse location on the basemap. You will be able to see the Playhouse\u2019s large footprint on the corner of Kent Street and Grafton Street.<\/li>\n<\/ul>\n<figure id=\"attachment_930\" aria-describedby=\"caption-attachment-930\" style=\"width: 1041px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031.png\" alt=\"Figure 4.16. The OpenStreetMap with the King\u2019s Playhouse marked with a blue circle around it.\" width=\"1041\" height=\"547\" class=\"size-full wp-image-930\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031.png 1041w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031-300x158.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031-1024x538.png 1024w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031-768x404.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031-65x34.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031-225x118.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image031-350x184.png 350w\" sizes=\"auto, (max-width: 1041px) 100vw, 1041px\" \/><figcaption id=\"caption-attachment-930\" class=\"wp-caption-text\">Figure 4.16<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Click on the location of the Playhouse on the OpenStreetMap to place our point.<\/li>\n<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\n<ul>\n<li style=\"font-weight: 400\">ID: 03<\/li>\n<li style=\"font-weight: 400\">Name: King\u2019s Playhouse<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Click OK.<\/li>\n<\/ul>\n<p>You will now see a point appear where the King\u2019s Playhouse is on the basemap.<\/p>\n<figure id=\"attachment_931\" aria-describedby=\"caption-attachment-931\" style=\"width: 1173px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033.png\" alt=\"Figure 4.17. The OpenStreetMap with the King\u2019s Playhouse marked with a dot and both churches also marked.\" width=\"1173\" height=\"676\" class=\"size-full wp-image-931\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033.png 1173w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033-300x173.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033-1024x590.png 1024w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033-768x443.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033-65x37.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033-225x130.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image033-350x202.png 350w\" sizes=\"auto, (max-width: 1173px) 100vw, 1173px\" \/><figcaption id=\"caption-attachment-931\" class=\"wp-caption-text\">Figure 4.17<\/figcaption><\/figure>\n<h4>Saving the Vector Data<\/h4>\n<p>After we have created some vector data, we need to save it. Saving vector data is a separate process from saving the QGIS project itself. While it is also a good idea to continuously click Project &gt; Save, after adding some vector data, we will also click the \u201cSave Layer Edits\u201d button.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click the \u201cSave Layer Edits\u201d button.<\/li>\n<\/ul>\n<figure id=\"attachment_932\" aria-describedby=\"caption-attachment-932\" style=\"width: 149px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png\" alt=\"Figure 4.18. This shows the Save Layer Edits button which looks like a printer with a pencil icon.\" width=\"149\" height=\"41\" class=\"size-full wp-image-932\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png 149w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035-65x18.png 65w\" sizes=\"auto, (max-width: 149px) 100vw, 149px\" \/><figcaption id=\"caption-attachment-932\" class=\"wp-caption-text\">Figure 4.18<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Line<\/h2>\n<h3>Creating a New Shapefile Layer<\/h3>\n<p>Once again, we will first create a new shapefile:<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Layer<\/li>\n<li style=\"font-weight: 400\">Hover over Create Layer<\/li>\n<li style=\"font-weight: 400\">Click New Shapefile Layer<\/li>\n<\/ul>\n<figure id=\"attachment_915\" aria-describedby=\"caption-attachment-915\" style=\"width: 835px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png\" alt=\"Figure 4.1. In the upper part of the screen toolbar selected is Layer, then Create Layer from the pop-up and from the second pop-up Shapefile Layer is selected.\" width=\"835\" height=\"680\" class=\"size-full wp-image-915\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png 835w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-300x244.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-768x625.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-65x53.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-225x183.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-350x285.png 350w\" sizes=\"auto, (max-width: 835px) 100vw, 835px\" \/><figcaption id=\"caption-attachment-915\" class=\"wp-caption-text\">Figure 4.19<\/figcaption><\/figure>\n<p>Fill out the following information in the dialogue box that appears:<\/p>\n<p>File Name: &#8230;QGIS\\Chapter4\\Vectors\\1991road.shp<\/p>\n<ul>\n<li style=\"font-weight: 400\">To save our shapefile in the correct location, click the ellipsis to the right of the File Name field. Navigate to QGIS\\Chapter4\\Vectors. <strong>Enter 1991road<\/strong> as the File Name, and then click Save.<\/li>\n<\/ul>\n<p>File Encoding: UTF-8<\/p>\n<p>Geometry Type: Line<\/p>\n<p>Additional Dimensions: None<\/p>\n<p>Underneath Additional Dimensions, we can also make sure the CRS is set to \u201cProject CRS: <strong>EPSG: 2954<\/strong>.\u201d<\/p>\n<p>Under New Field, we can enter the following information:<\/p>\n<ul>\n<li>Name: Name<\/li>\n<li>Type: TextString (in some versions &#8220;Text Data&#8221;)<\/li>\n<\/ul>\n<p>We can leave the other settings.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Add to Fields List.<\/li>\n<\/ul>\n<p>We are creating this new field so that we can keep track of the names of the places for which we are creating lines.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click OK<\/li>\n<\/ul>\n<figure id=\"attachment_933\" aria-describedby=\"caption-attachment-933\" style=\"width: 735px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038.png\" alt=\"Figure 4.20. In the New Shapefile Layer with the values: File Encoding: UTF-8, Geometry Type: Line.\" width=\"735\" height=\"646\" class=\"wp-image-933 size-full\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038.png 735w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038-300x264.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038-65x57.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038-225x198.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image038-350x308.png 350w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><figcaption id=\"caption-attachment-933\" class=\"wp-caption-text\">Figure 4.20<\/figcaption><\/figure>\n<figure id=\"attachment_934\" aria-describedby=\"caption-attachment-934\" style=\"width: 737px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040.png\" alt=\"Figure 4.21. This shows the New Shapefile Layer with the values, Additional Dimensions: None. Under New Field the values are: Name: Name, and Type: Text Data. In the fields list it now shows two: id and Name.\" width=\"737\" height=\"645\" class=\"size-full wp-image-934\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040.png 737w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040-300x263.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040-65x57.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040-225x197.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image040-350x306.png 350w\" sizes=\"auto, (max-width: 737px) 100vw, 737px\" \/><figcaption id=\"caption-attachment-934\" class=\"wp-caption-text\">Figure 4.21<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<h3>Adding a Line to the Reference Map<\/h3>\n<h4>An Important Note about Scale<\/h4>\n<p>As we did when we added the points, we must consider the small scale of the NTS map when we add our line in this step. We will first identify the road for which we want to create a line on the NTS map. We will then turn off the NTS map and check the location of the same road on the basemap.<\/p>\n<h4>Adding the Line<\/h4>\n<ul>\n<li style=\"font-weight: 400\">Click Toggle Editing<\/li>\n<\/ul>\n<figure id=\"attachment_935\" aria-describedby=\"caption-attachment-935\" style=\"width: 627px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042.png\" alt=\"Figure 4.22. The upper section of the page tool bar the toggle editing icon that looks like a pencil is selected.\" width=\"627\" height=\"178\" class=\"size-full wp-image-935\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042.png 627w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042-300x85.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042-65x18.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042-225x64.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image042-350x99.png 350w\" sizes=\"auto, (max-width: 627px) 100vw, 627px\" \/><figcaption id=\"caption-attachment-935\" class=\"wp-caption-text\">Figure 4.22<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Click Add Line Feature<\/li>\n<\/ul>\n<figure id=\"attachment_936\" aria-describedby=\"caption-attachment-936\" style=\"width: 628px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044.png\" alt=\"Figure 4.23. The Add Line Feature is selected, this icon looks like a V line with a star in the corner.\" width=\"628\" height=\"213\" class=\"size-full wp-image-936\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044.png 628w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044-300x102.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044-65x22.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044-225x76.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image044-350x119.png 350w\" sizes=\"auto, (max-width: 628px) 100vw, 628px\" \/><figcaption id=\"caption-attachment-936\" class=\"wp-caption-text\">Figure 4.23<\/figcaption><\/figure>\n<h5>Adding a Line for Kent Street<\/h5>\n<ul>\n<li style=\"font-weight: 400\">Identify where Kent Street and North Street intersect on the NTS map.<\/li>\n<\/ul>\n<figure id=\"attachment_937\" aria-describedby=\"caption-attachment-937\" style=\"width: 921px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046.png\" alt=\"Figure 4.24. On the NTS map the intersection at Kent St. and North St. is circled with a blue marker.\" width=\"921\" height=\"770\" class=\"size-full wp-image-937\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046.png 921w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046-300x251.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046-768x642.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046-65x54.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046-225x188.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image046-350x293.png 350w\" sizes=\"auto, (max-width: 921px) 100vw, 921px\" \/><figcaption id=\"caption-attachment-937\" class=\"wp-caption-text\">Figure 4.24<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Identify where Kent Street and Water Street intersect on the NTS map.<\/li>\n<\/ul>\n<figure id=\"attachment_938\" aria-describedby=\"caption-attachment-938\" style=\"width: 921px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048.png\" alt=\"Figure 4.25. This shows where Kent St. and Water St. intersect on the NTS map with a blue circle around the intersection.\" width=\"921\" height=\"770\" class=\"size-full wp-image-938\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048.png 921w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048-300x251.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048-768x642.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048-65x54.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048-225x188.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image048-350x293.png 350w\" sizes=\"auto, (max-width: 921px) 100vw, 921px\" \/><figcaption id=\"caption-attachment-938\" class=\"wp-caption-text\">Figure 4.25<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Turn off the NTS layer and look at the base map. Identify the same two points on the base map.<\/li>\n<\/ul>\n<figure id=\"attachment_939\" aria-describedby=\"caption-attachment-939\" style=\"width: 1006px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050.png\" alt=\"Figure 4.26. On the OpenStreetMap the intersections at Kent St. and Water St., and Kent St. and North St.are circled in blue marker.\" width=\"1006\" height=\"733\" class=\"size-full wp-image-939\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050.png 1006w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050-300x219.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050-768x560.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050-65x47.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050-225x164.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image050-350x255.png 350w\" sizes=\"auto, (max-width: 1006px) 100vw, 1006px\" \/><figcaption id=\"caption-attachment-939\" class=\"wp-caption-text\">Figure 4.26<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Left-click once at the intersection of Kent Street and North Street.<\/li>\n<li style=\"font-weight: 400\">Move your mouse to the intersection of Kent Street and Water Street and left-click again.\n<ul>\n<li style=\"font-weight: 400\">Although it is not necessary in this case, you could continue to left-click at various other points to add extra segments to your line.<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Right-click to complete the line.<\/li>\n<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\n<ul>\n<li style=\"font-weight: 400\">ID: 01<\/li>\n<li style=\"font-weight: 400\">Name: Kent Street<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Click OK.<\/li>\n<\/ul>\n<figure id=\"attachment_940\" aria-describedby=\"caption-attachment-940\" style=\"width: 907px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052.png\" alt=\"Figure 4.27. A red line along Kent St. is now rendered; however, it is difficult to view on the map.\" width=\"907\" height=\"697\" class=\"size-full wp-image-940\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052.png 907w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052-300x231.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052-768x590.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052-65x50.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052-225x173.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image052-350x269.png 350w\" sizes=\"auto, (max-width: 907px) 100vw, 907px\" \/><figcaption id=\"caption-attachment-940\" class=\"wp-caption-text\">Figure 4.27<\/figcaption><\/figure>\n<p>The red colour of the line we just created renders it difficult to see among the red in the NTS map.<\/p>\n<ul>\n<li style=\"font-weight: 400\">In the Layer Styling panel to the right of your screen, click the Color dropdown menu and change the line\u2019s colour to a purple or blue.<\/li>\n<li style=\"font-weight: 400\">Change the line\u2019s Width to 1.0 as well.<\/li>\n<li style=\"font-weight: 400\">Click Apply<\/li>\n<\/ul>\n<figure id=\"attachment_941\" aria-describedby=\"caption-attachment-941\" style=\"width: 305px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image054.png\" alt=\"Figure 4.28. In the Layer Styling section the line colour is changed to blue to make it more visible.\" width=\"305\" height=\"865\" class=\"size-full wp-image-941\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image054.png 305w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image054-106x300.png 106w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image054-65x184.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image054-225x638.png 225w\" sizes=\"auto, (max-width: 305px) 100vw, 305px\" \/><figcaption id=\"caption-attachment-941\" class=\"wp-caption-text\">Figure 4.28<\/figcaption><\/figure>\n<p>The resulting line is much easier to see:<\/p>\n<figure id=\"attachment_942\" aria-describedby=\"caption-attachment-942\" style=\"width: 871px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056.png\" alt=\"Figure 4.29. A blue line along Kent St. is rendered on the map.\" width=\"871\" height=\"687\" class=\"size-full wp-image-942\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056.png 871w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056-300x237.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056-768x606.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056-65x51.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056-225x177.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image056-350x276.png 350w\" sizes=\"auto, (max-width: 871px) 100vw, 871px\" \/><figcaption id=\"caption-attachment-942\" class=\"wp-caption-text\">Figure 4.29<\/figcaption><\/figure>\n<p>Looking at our line with the NTS layer turned on proves once again that we were able to add more accurate vector data by using the larger-scale basemap than the NTS map.<\/p>\n<h4>Saving the Vector Data<\/h4>\n<p>As always, let\u2019s save the vector data that we just created.<\/p>\n<ul>\n<li>Click the \u201cSave Layer Edits\u201d button.<\/li>\n<\/ul>\n<figure id=\"attachment_932\" aria-describedby=\"caption-attachment-932\" style=\"width: 149px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png\" alt=\"Figure 4.18. This shows the Save Layer Edits button which looks like a printer with a pencil icon.\" width=\"149\" height=\"41\" class=\"size-full wp-image-932\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png 149w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035-65x18.png 65w\" sizes=\"auto, (max-width: 149px) 100vw, 149px\" \/><figcaption id=\"caption-attachment-932\" class=\"wp-caption-text\">Figure 4.30<\/figcaption><\/figure>\n<h2>Polygon<\/h2>\n<h3>Creating a New Shapefile<\/h3>\n<p>Once again, we will first create a new shapefile:<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Layer<\/li>\n<li style=\"font-weight: 400\">Hover over Create Layer<\/li>\n<li style=\"font-weight: 400\">Click New Shapefile Layer<\/li>\n<\/ul>\n<figure id=\"attachment_915\" aria-describedby=\"caption-attachment-915\" style=\"width: 835px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png\" alt=\"Figure 4.1. In the upper part of the screen toolbar selected is Layer, then Create Layer from the pop-up and from the second pop-up Shapefile Layer is selected.\" width=\"835\" height=\"680\" class=\"size-full wp-image-915\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001.png 835w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-300x244.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-768x625.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-65x53.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-225x183.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image001-350x285.png 350w\" sizes=\"auto, (max-width: 835px) 100vw, 835px\" \/><figcaption id=\"caption-attachment-915\" class=\"wp-caption-text\">Figure 4.31<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>Fill out the following information in the dialogue box that appears:<\/p>\n<p>File Name: &#8230;QGIS\\Chapter4\\Vectors\\1991kentsquare.shp<\/p>\n<ul>\n<li style=\"font-weight: 400\">To save our shapefile in the correct location, click the ellipsis to the right of the File Name field. Navigate to QGIS\\Chapter4\\Vectors. Enter <strong>1991kentsquare<\/strong> as the File Name, and then click Save.<\/li>\n<\/ul>\n<p>File Encoding: UTF-8<\/p>\n<p>Geometry Type: Polygon<\/p>\n<p>Additional Dimensions: None<\/p>\n<p>Underneath Additional Dimensions, we can also make sure the CRS is set to \u201cProject CRS: <strong>EPSG: 2954<\/strong>.\u201d<\/p>\n<p>Under New Field, we can enter the following information:<\/p>\n<ul>\n<li>Name: Name<\/li>\n<li>Type: TextString (in some versions &#8220;Text Data&#8221;)<\/li>\n<\/ul>\n<p>We can leave the other settings.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click Add to Fields List.<\/li>\n<\/ul>\n<p>We are creating this new field so that we can keep track of the names of the places for which we are creating polygons.<\/p>\n<figure id=\"attachment_943\" aria-describedby=\"caption-attachment-943\" style=\"width: 735px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059.png\" alt=\"Figure 4.32. In the New Shapefile Layer with the values: File Encoding: UTF-8, Geometry Type: Polygon.\" width=\"735\" height=\"643\" class=\"size-full wp-image-943\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059.png 735w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059-300x262.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059-65x57.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059-225x197.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image059-350x306.png 350w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><figcaption id=\"caption-attachment-943\" class=\"wp-caption-text\">Figure 4.32<\/figcaption><\/figure>\n<figure id=\"attachment_944\" aria-describedby=\"caption-attachment-944\" style=\"width: 734px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061.png\" alt=\"Figure 4.33. This shows the New Shapefile Layer with the values, Additional Dimensions: None. Under New Field the values are: Name: Name, and Type: Text Data. In the fields list it now shows two: id and Name.\" width=\"734\" height=\"642\" class=\"size-full wp-image-944\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061.png 734w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061-300x262.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061-65x57.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061-225x197.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image061-350x306.png 350w\" sizes=\"auto, (max-width: 734px) 100vw, 734px\" \/><figcaption id=\"caption-attachment-944\" class=\"wp-caption-text\">Figure 4.33<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Click OK<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h3>Adding a Polygon to the Reference Map<\/h3>\n<h4>An Important Note about Scale<\/h4>\n<p>As we did when we added the points and the line, we must consider the small scale of the NTS map when we add our polygon in this step. We will first identify the area for which we want to create a polygon on the NTS map. We will then turn off the NTS map and check the location of the same area on the basemap.<\/p>\n<h4>Adding the Polygon<\/h4>\n<ul>\n<li style=\"font-weight: 400\">Click Toggle Editing<\/li>\n<\/ul>\n<figure id=\"attachment_945\" aria-describedby=\"caption-attachment-945\" style=\"width: 627px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063.png\" alt=\"Figure 4.34. The upper section of the page tool bar the toggle editing icon that looks like a pencil is selected.\" width=\"627\" height=\"272\" class=\"size-full wp-image-945\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063.png 627w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063-300x130.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063-65x28.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063-225x98.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image063-350x152.png 350w\" sizes=\"auto, (max-width: 627px) 100vw, 627px\" \/><figcaption id=\"caption-attachment-945\" class=\"wp-caption-text\">Figure 4.34<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Click Add Polygon Feature<\/li>\n<\/ul>\n<figure id=\"attachment_946\" aria-describedby=\"caption-attachment-946\" style=\"width: 657px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065.png\" alt=\"Figure 4.35. The Add Polygon Feature is selected, this icon looks like a kidney bean shape with a star in the corner.\" width=\"657\" height=\"265\" class=\"size-full wp-image-946\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065.png 657w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065-300x121.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065-65x26.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065-225x91.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image065-350x141.png 350w\" sizes=\"auto, (max-width: 657px) 100vw, 657px\" \/><figcaption id=\"caption-attachment-946\" class=\"wp-caption-text\">Figure 4.35<\/figcaption><\/figure>\n<h5>Adding a Polygon for Kent Square<\/h5>\n<ul>\n<li style=\"font-weight: 400\">Identify Kent Square on the NTS map.<\/li>\n<\/ul>\n<figure id=\"attachment_947\" aria-describedby=\"caption-attachment-947\" style=\"width: 919px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067.png\" alt=\"Figure 4.36. Kent Square on the NTS map is shown with a blue box around the perimeter.\" width=\"919\" height=\"671\" class=\"size-full wp-image-947\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067.png 919w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067-300x219.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067-768x561.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067-65x47.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067-225x164.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image067-350x256.png 350w\" sizes=\"auto, (max-width: 919px) 100vw, 919px\" \/><figcaption id=\"caption-attachment-947\" class=\"wp-caption-text\">Figure 4.36. Kent Square on the NTS map is shown with a blue box around the perimeter.<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400\">Turn off the NTS layer and identify Kent Square on the basemap.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069.png\" alt=\"Figure 4.37. On the OpenStreetMap the blue box that was on the NTS map is visible\" width=\"755\" height=\"529\" class=\"alignnone wp-image-948 size-full\" style=\"margin-bottom: -1ex\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069.png 755w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069-300x210.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069-65x46.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069-225x158.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image069-350x245.png 350w\" sizes=\"auto, (max-width: 755px) 100vw, 755px\" \/>Figure 4.37<\/p>\n<ul>\n<li style=\"font-weight: 400\">Left-click once at the corner of George Street and Fitzroy Street.<\/li>\n<li style=\"font-weight: 400\">Move your mouse to the corner of George Street and Victoria Street and left-click again.<\/li>\n<li style=\"font-weight: 400\">Move your mouse to the corner of Victoria Street and Grafton Street and left-click again.<\/li>\n<li style=\"font-weight: 400\">Move your mouse to the corner of Grafton Street and Fitzroy Street and left-click again.<\/li>\n<li style=\"font-weight: 400\">Right-click to complete the line.<\/li>\n<li style=\"font-weight: 400\">In the Feature Attributes dialogue box that appears, type in the following details:\n<ul>\n<li style=\"font-weight: 400\">ID: 01<\/li>\n<li style=\"font-weight: 400\">Name: Kent Square<\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\">Click OK.<\/li>\n<\/ul>\n<p>The resulting polygon hides part of the road and buildings layers that we previously created.<\/p>\n<ul>\n<li style=\"font-weight: 400\">In the Table of Contents, drag the 1991kentsquare layer <strong>beneath<\/strong> the 1991buildings layer.<\/li>\n<li style=\"font-weight: 400\">In the Layer Styling panel to the right of your screen, change the Opacity to 50.0%.<\/li>\n<\/ul>\n<p>Here is the result:<\/p>\n<figure id=\"attachment_949\" aria-describedby=\"caption-attachment-949\" style=\"width: 938px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071.png\" alt=\"Figure 4.38. The blue box on the perimeter of Kent Square is now shaded in and fit to the OpenStreetMap image of Kent Square with the blue line down Kent St. visible going through the Square.\" width=\"938\" height=\"607\" class=\"size-full wp-image-949\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071.png 938w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071-300x194.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071-768x497.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071-65x42.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071-225x146.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image071-350x226.png 350w\" sizes=\"auto, (max-width: 938px) 100vw, 938px\" \/><figcaption id=\"caption-attachment-949\" class=\"wp-caption-text\">Figure 4.38<\/figcaption><\/figure>\n<p>If we turn on the NTS map, we can see that we placed the polygon in a much more accurate position by using the basemap.<\/p>\n<figure id=\"attachment_950\" aria-describedby=\"caption-attachment-950\" style=\"width: 1046px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073.png\" alt=\"Figure 4.39. The new Kent Square is visible on the NTS map, with the blue line showing the location of Kent St. still visible.\" width=\"1046\" height=\"772\" class=\"size-full wp-image-950\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073.png 1046w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073-300x221.png 300w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073-1024x756.png 1024w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073-768x567.png 768w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073-65x48.png 65w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073-225x166.png 225w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image073-350x258.png 350w\" sizes=\"auto, (max-width: 1046px) 100vw, 1046px\" \/><figcaption id=\"caption-attachment-950\" class=\"wp-caption-text\">Figure 4.39<\/figcaption><\/figure>\n<h4>Saving the Vector Data<\/h4>\n<p>As always, let\u2019s save the vector data that we just created.<\/p>\n<ul>\n<li style=\"font-weight: 400\">Click the \u201cSave Layer Edits\u201d button.<\/li>\n<\/ul>\n<figure id=\"attachment_932\" aria-describedby=\"caption-attachment-932\" style=\"width: 149px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png\" alt=\"Figure 4.18. This shows the Save Layer Edits button which looks like a printer with a pencil icon.\" width=\"149\" height=\"41\" class=\"size-full wp-image-932\" srcset=\"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035.png 149w, https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-content\/uploads\/sites\/53\/2022\/03\/image035-65x18.png 65w\" sizes=\"auto, (max-width: 149px) 100vw, 149px\" \/><figcaption id=\"caption-attachment-932\" class=\"wp-caption-text\">Figure 4.40<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n","protected":false},"author":31,"menu_order":3,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[48],"contributor":[],"license":[],"class_list":["post-1025","chapter","type-chapter","status-publish","hentry","chapter-type-numberless"],"part":1017,"_links":{"self":[{"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/chapters\/1025","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/wp\/v2\/users\/31"}],"version-history":[{"count":8,"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/chapters\/1025\/revisions"}],"predecessor-version":[{"id":1170,"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/chapters\/1025\/revisions\/1170"}],"part":[{"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/parts\/1017"}],"metadata":[{"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/chapters\/1025\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/wp\/v2\/media?parent=1025"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/pressbooks\/v2\/chapter-type?post=1025"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/wp\/v2\/contributor?post=1025"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.library.upei.ca\/geospatialhumanities\/wp-json\/wp\/v2\/license?post=1025"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}