[GRASSLIST:3747] curvature map

GRASS GRASS user
1

hello

I want to create curvature map.
I created it in two ways.
. r.slope.aspect elevation=el pcurv=cur0 or
. v.surf.rast ( I have cont topo map)

But I noticed that these two maps have different values at same
locations

Where may be the wrong ?

kind regards

Ahmet Temiz
TURKEY

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2

On Fri, Jun 25, 2004 at 04:40:01PM +0300, temiz wrote:

hello

I want to create curvature map.
I created it in two ways.
. r.slope.aspect elevation=el pcurv=cur0 or
. v.surf.rast ( I have cont topo map)

(v.surf.rst = regularized splines with tension)

And a third option is r.param.scale.

But I noticed that these two maps have different values at same
locations

Where may be the wrong ?

They are simply using different algorithm. So you will have
to choose the appropriate for your problem to solve. The
manual pages might be of help to understand which algorithms
are used.

Markus