Differences

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--- osgis [2012/12/07 17:27]
glaroc
+++ osgis [2013/11/27 16:27] (current)
glaroc [**THIS PAGE WAS DONE FOR AN OLDER VERSION OF THE WORKSHOP [[introgis|CLICK HERE FOR THE CURRENT VERSION]]**]
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 Guillaume Larocque, Research Professional. ([email protected])
-November 2012
+====== **THIS PAGE WAS DONE FOR AN OLDER VERSION OF THE WORKSHOP ** ======
+[[introgis|CLICK HERE FOR THE CURRENT VERSION]]
 ===== Presentation =====
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 **Objective: create a NDVI (Normalized Difference Vegetation Index) map, associate it with a color palette and extract the mean NDVI for parcs and fields of the region.**
-Step 1: Within QGIS: Add the parcs_terrains_sports.shp layer to the canvas and save it as a new file with the CRS NAD83 / UTM 18N. Convert the file to GRASS format using the v.in.ogr.qgis function. If the operation was completed successfully, you can now close QGIS.
+Step 1: Within QGIS: Add the parcs_terrains_sports.shp layer to the canvas and save it as a new file with the CRS NAD83 / UTM 18N. Open the mapset 'landsat' from the 'Day 2' Database folder extracted from the zip file. Convert the file to GRASS format using the v.in.ogr.qgis function. If the operation was completed successfully, you can now close QGIS.
 Step 2: Open GRASS. On the 'Welcome to GRASS' interface, Browse to select the GIS Data directory and select the folder named Day 2 that you have extracted from the downloaded zip file. The project should be set to '31h05' and the mapset to 'Landsat'.
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 **Objective: Create a 3D visualization showing a composite RGB map superimposed on an elevation surface.**
-Step 1: Select Raster>Generate colors>Manage colors>Create RGB. You will now create an RGB composite file by using the following band associations: Red:4 Green:3 Blue:2.
+Step 1: Select Raster>Manage colors>Create RGB. You will now create an RGB composite file by using the following band associations: Red:4 Green:3 Blue:2.
 Step 2: In Files>NVIZ, create a 3D visualization with the file 31H05_dem as the elevation file and the RGB composite you just created (leave the other fieds blank). To improve the display resolution, click on Visualize>Raster Surface and specify 1 as the fine resolution.