[GRASS-user] Terrain Curve Values

Markus Neteler neteler at osgeo.org
Tue Mar 2 02:45:00 EST 2010

On Mon, Mar 1, 2010 at 4:19 PM, Rich Shepard <rshepard at appl-ecosys.com> wrote:
>  Just to confirm: the curve output from r.slope.aspect is positive when the
> curve is convex and negative when the curve is concave. Correct?

Here the answer from Helena (not on this list):

On Tue, Mar 2, 2010 at 1:41 AM, Helena Mitasova <hmitaso at unity.ncsu.edu> wrote:
> yes - convex is positive and concave is negative. It is the same as in v.surf.rst.

>  There's nothing on the man page about this. Perhaps a sentence could be
> added.

I agree.


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