Differences

This shows you the differences between two versions of the page.

--- onlinegis [2021/11/11 17:59]
elijah clarifying menu navigation and file extensions
+++ onlinegis [2025/03/11 15:56] (current)
qcbs [1 - Installation of QGIS and GRASS]
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-======= Introduction to Open Source Geographic information systems with QGIS =======
+======= Introduction to Open Source Geographic Information Systems with QGIS =======
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 Guillaume Larocque, Research Professional. ([email protected])
-October 27-28 2021. Online.
+March 2025. Online.
 ==== Presentation ====
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 ===== 1 - Installation of QGIS and GRASS =====
-QGIS 3.20 will be used for this workshop. Please make sure that you have the appropriate versions installed prior to the workshop. The standalone installation is less complicated than the OSGeo4W Network Installer. If you only need QGIS (i.e. for this workshop), you may want to select that instead of OSGeo4W which is [[https://www.osgeo.org/projects/osgeo4w/|a set of open source geospatial software for Windows]].
+Please make sure that you have the appropriate versions installed prior to the workshop. The standalone installation is less complicated than the OSGeo4W Network Installer. If you only need QGIS (i.e. for this workshop), you may want to select that instead of OSGeo4W which is [[https://www.osgeo.org/projects/osgeo4w/|a set of open source geospatial software for Windows]].
 Install QGIS following [[https://qgis.org/en/site/forusers/download.html|these instructions.]]
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 ==== QGIS ====
-  * **[[https://docs.qgis.org/3.10/en/docs/user_manual/index.html|The QGIS user guide]]**.
+  * **[[https://docs.qgis.org/3.34/en/docs/user_manual/index.html|The QGIS user guide]]**.
-  * **[[https://docs.qgis.org/3.10/en/docs/training_manual/index.html|The QGIS Training Manual]]**. Comprehensive online guide to QGIS with detailed tutorials. A book version of this manual is [[https://locatepress.com/qtm|also available]].
+  * **[[https://docs.qgis.org/3.34/en/docs/training_manual/index.html|The QGIS Training Manual]]**. Comprehensive online guide to QGIS with detailed tutorials. A book version of this manual is [[https://locatepress.com/qtm|also available]].
   * [[http://www.qgistutorials.com/en/|QGIS Tutorials and Tips]] by Ujaval Gandhi.
   * **[[https://www.qgis.org/en/site/forusers/books/index.html|Books on QGIS]]** List of recent books on using QGIS.
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 Move this background layer to the bottom in the Layers list by clicking on it and dragging it below your previous point layer. You can find other sources of tiles here (https://leaflet-extras.github.io/leaflet-providers/preview/)
-**Step 3**: To digitize the two reserves, you need to add a new empty polygon layer (''>Layer >Create Layer >Geopackage layer''). Specify the CRS as NAD 83/UTM zone 18N and polygon as the geometry type. A column/attribute for ID (integer) is already specified, add one for Name (Text data) by specifying a Name in the 'New field' section and clicking Add to fields list. Give the new Geopackage database an appropriate name (ex. mtl_region) and make sure it's in a appropriate folder on your computer by clicking on the ''...'' menu. Specify and appropriate name for the layer as well (ex. McGill_Reserves). Click OK and Enable Edit mode by left-clicking on the layer name in the left menu and selecting ''Toggle Editing''.
+**Step 3**: To digitize the two reserves, you need to add a new empty polygon layer (''>Layer >Create Layer >New Geopackage layer''). Specify the CRS as NAD 83/UTM zone 18N and polygon as the geometry type. A column/attribute for ID (integer) is already specified, add one for Name (Text data) by specifying a Name in the 'New field' section and clicking Add to fields list. Give the new Geopackage database an appropriate name (ex. mtl_region) and make sure it's in a appropriate folder on your computer by clicking on the ''...'' menu. Specify an appropriate name for the layer as well (ex. McGill_Reserves). Click OK and Enable Edit mode by left-clicking on the layer name in the left menu and selecting ''Toggle Editing''.
 **Step 4**: Digitize the McGill Molson Reserve and the Morgan Arboretum from the satellite image. To help you locate those areas, use the points which you imported from the ''.csv'' file. For the Molson Reserve, digitize the forested area located between the residential street (Blvd. Perrot) and highway 20 by clicking on the digitize icon: {{:capture_du_2013-09-25_10_58_40.png?nolink&40|}}. For the Arboretum, digitize the contiguous forested area surrounding the point. The Arboretum is approximately 250 hectares.
-**Step 5**: Now add polygons adjacent to those polygons showing what you propose as extensions to the existing reserves. For two adjacent polygons to properly share a common boundary, you need to digitize the second polygon so as to make it overlap slightly the first one. For this to work, it is important to enable snapping by clicking on the red magnet icon and setting an appropriate snapping tolerance (ex 20 meters). If you don't see the snapping options toolbar, enable the Snapping toolbar under ''>View >Toolbar''.
+**Step 5**: Now add polygons adjacent to those polygons corresponding to what you propose as extensions to the existing reserves. For two adjacent polygons to properly share a common boundary, you need to digitize the second polygon so as to make it overlap slightly the first one. For this to work, it is important to enable snapping by clicking on the red magnet icon and setting an appropriate snapping tolerance (ex 20 meters). If you don't see the snapping options toolbar, enable the Snapping toolbar under ''>View >Toolbar''.
 **Step 6**: When done, exit Edit mode (click on pencil icon) and choose to save the layer.