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?
There's nothing on the man page about this. Perhaps a sentence could be
added.
Rich
On Mon, Mar 1, 2010 at 4:19 PM, Rich Shepard <rshepard@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@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.
Markus
Rich 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?There's nothing on the man page about this. Perhaps
a sentence could be
added.
please run an experiment after creating a pseudo surface with
r.surf.volcano (wiki addons) using the gaussian method, and report
back to us. Then we can add the confirmed answer to the help page.
suggestions for pseudo DEM: (after r.sun wiki page)
r.surf.volcano out=gauss method=gaussian kurtosis=1
regards,
Hamish
On Tue, 2 Mar 2010, Markus Neteler wrote:
Here the answer from Helena (not on this list):
yes - convex is positive and concave is negative. It is the same as in v.surf.rst.
Thank you both.
Rich