Hello, I hope all is well
I am presently working on TOPMODEL, a rainfall-runoff model, for my thesis. What I need GRASS for is a topographic index ln(a/tanB), but I'm not certain how to calculate it. I would also like to know how to get the mean, std deviation and skewness of that index. Finally I need to put it in an I*2 form to be used by the model.
If anyone has any information on any aspect of this I would certainly appreciate it.
Dan Riker
Duke University