[GRASS-user] Grass: Finding depression from contour

[Ivan Marchesini]

There is a useful addon for this: r.geomorphon .
An alternative can be also
r.param.scale
Best
Ivan

Il Dom 11 Dic 2016, 13:22 Markus Neteler <neteler at osgeo.org> ha scritto:

> On Sun, Dec 11, 2016 at 5:01 AM, Faisal Kabir <faisal.kabir at gmail.com>
> wrote:
> > Hi,
> > I've labeled contour (DEM) map using d.vect. Now I would like to find the
> > depression [contour with low elev value are inside the contour of higher
> > elev] automatically. I can view it in the Map display window which is
> > tedious as I've to zoom in and out for several times.
> >
> > Is there any method available in GRASS?
>
> Yes: in r.fill.dir for example.
>
> I have taken your question as motivation to add an example to the
> manual page and updated it on the GRASS GIS Web server right away:
>
> https://grass.osgeo.org/grass72/manuals/r.fill.dir.html#examples
>
> It shows how to run sink-filling and how to identify the filled areas.
>
> Please note that filling depressions is not needed nor desired when
> calculating watersheds with r.watershed in case that this is your
> scope.
>
> Best,
> Markus
>
> --
> Markus Neteler
> http://www.mundialis.de - free data with free software
> http://grass.osgeo.org
> http://courses.neteler.org/blog
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