Hi all,
If you've ever done calculus you may recall the second differential of a function (2D or 3D). This is handy in working out where the tops of peaks and bottom of valleys are.
When shading, the use of the angle parameter provides a pretty good means of shading peaks and troughs - but the results can occassionaly miss expectations (e.g. separately shading the bottom of ripples on an angular plane).
So I was wondering, would an additional "second differential" option (possibly in combination with "angle") provide a worthwhile way of varying the shading?
Best,
Andrew Randle
The Geostation