Slope form

[Houxiang Wang GEO Grad 96]

Hello, everyone:

I am trying to generate a raster file out of DEM, which shows the slope form as 
concave, convex. r.slope.aspect works only for a slope map (percentage or 
degree) and/or an aspect map. I could not find any program which can produce 
slope form (curvature). Any help would be greatly appreciated.

Thanks.

Houxiang Wang

Miami University, Ohio