[GRASS-dev] [GRASS-SVN] r60855 - grass/branches/releasebranch_7_0/raster/r.watershed/front

[Huidae Cho]

Hi Markus,

Is sink filling discouraged or just not needed and optional? My impression
is that r.watershed produces better results with not sink filled rasters,
but sink filling doesn't hurt much.

Thanks.
Huidae


On Tue, Jun 17, 2014 at 1:40 PM, <svn_grass at osgeo.org> wrote:

> Author: neteler
> Date: 2014-06-17 10:40:00 -0700 (Tue, 17 Jun 2014)
> New Revision: 60855
>
> Modified:
>
>  grass/branches/releasebranch_7_0/raster/r.watershed/front/r.watershed.html
> Log:
> r.watershed manual: (minor) sync with trunk
>
> Modified:
> grass/branches/releasebranch_7_0/raster/r.watershed/front/r.watershed.html
> ===================================================================
> ---
> grass/branches/releasebranch_7_0/raster/r.watershed/front/r.watershed.html
>  2014-06-17 17:39:37 UTC (rev 60854)
> +++
> grass/branches/releasebranch_7_0/raster/r.watershed/front/r.watershed.html
>  2014-06-17 17:40:00 UTC (rev 60855)
> @@ -55,7 +55,8 @@
>  values are valid elevation data.  Gaps in the elevation map that are
>  located within the area of interest must be filled beforehand,
>  e.g. with <em><a href="r.fillnulls.html">r.fillnulls</a></em>, to
> -avoid distortions.
> +avoid distortions.  The elevation map need not be sink-filled because
> +the module uses a least-cost algorithm.
>
>  <p>
>  Map of actual depressions or sinkholes in the landscape that are large
> @@ -113,7 +114,7 @@
>  <p>
>  Output <b>tci</b> raster map contains topographic index TCI is
>  computed as
> -<tt>ln(α / tan(β))</tt> where α a is the cumulative
> +<tt>ln(α / tan(β))</tt> where α is the cumulative
>  upslope area draining through a point per unit contour length and
>  <tt>tan(β)</tt> is the local slope angle. The TCI reflects the
>  tendency of water to accumulate at any point in the catchment and the
>
> _______________________________________________
> grass-commit mailing list
> grass-commit at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-commit
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-dev/attachments/20140619/955a0808/attachment.html>