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.