Slope direction is shown by arrows, and coloured in the same scheme as previously with thicker arrows for steeper slopes, and longitudinal curvature indicated with convex slopes red and concave blue.
1:10000 seems about the limit of the smallest scale that QGIS will cope with the arrowed lines. Beyond that the computer just hangs - slope lines without arrows can be plotted without problem.
|Aberystwyth town centre, and the university campus. full-res version|
|Cadair Idris. This is a textbook example of a glacial landscape in the British Isles. full-res version|
|Aberystwyth area and Rheidol Valley. full-res version|
|Dyfi Estuary showing Borth, Tywyn and Machynlleth. full-res version|
The processed data currently includes the following area though I also have the whole of British Isles (except most of Shetland) DEM from 1 arcsec SRTM (and could download anywhere up to 60° latitude) but not processed to create slope curvature layers and segmented.
Pen-y-fan area, Brecon Beacons
|Pen-y-fan main summit to the right of centre, showing the slopes convex at the top, but generally concave further down. full-res version|
|Broader context at 1:40000. full-res version|