Practical Manual - Malareo
Practical Manual - Malareo
Practical Manual - Malareo
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Task 6: Aspect Analysis<br />
<br />
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<br />
<br />
<br />
<br />
<br />
<br />
Turn off the Slope Layer.<br />
Open the Raster Based<br />
Terrain Analysis window<br />
again.<br />
Select Aspect as the Analysis<br />
Select elevation_UTM as the<br />
input layer.<br />
Give the output a name and make<br />
sure to save in the correct folder.<br />
Select GeoTIFF as the output<br />
format.<br />
Check Add Result to Project Box<br />
Display the resulting image as a Psuedocolor map.<br />
The resulting image is a raster layer<br />
showing the aspects of the image. Each<br />
color represents a different direction<br />
(North, South, East, West etc.)<br />
Task 7: Raster Calculator<br />
The Raster Calculator enables calculations based on existing raster layers. Calculations can be performed<br />
on a single layer to extract specific information, or on multiple layers, using each layer a function of the<br />
calculation.<br />
<br />
Open a new QGIS project and add the layer called elevation_UTM.<br />
Change the CRS of both the layer and the project to Cape/UTM Zone 36S.<br />
<br />
<br />
Open the Properties menu of the layer and change the Color Map to Psuedocolor.<br />
To access the Raster Calculator, select Raster from the Menu Bar and select Raster Calculator.<br />
QGIS for Malaria Page 54
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