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I have a basic knowledge of QGIS and can do everything I need to do to achieve my requirements except the following.

I'm trying to graphically show areas of land that contain a set of specific slope ranges.

I'm working in relatively small areas of up to 50ha.

I have the DEM and can create contours with no problem.

What im trying to do is shown in the attached image, I know it can be done but I just don't know how to do it or what the process is called.

enter image description here

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  • have you calculated the slope? Commented Feb 12, 2016 at 6:15
  • Only manually over certain runs which seems to be adaquate for my current needs. Thanks Commented Feb 20, 2016 at 4:26

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You should use Terrain analysis to generate slopes from your DEM. Then you can add a thematic display to the slope layer.

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