Thanks for the replies, we actually derived SRTM DEMs and yes this thime
without artifacts.
Cheers
On 01/08/2014 09:16 PM, Markus Metz wrote:
On Fri, Dec 20, 2013 at 4:54 PM, manuel.martin
<manuel.mar...@orleans.inra.fr> wrote:
Hi all,
I just computed the slope using r.slope.aspect on the Aster data over the
full French territory, and as a result got large artefact stripes on a south
west-north east axe? When could it come from (inadequate re-projection, the
slope routine or the aster data)?
The stripped result :
https://www.dropbox.com/s/fcxaei1be9wsmka/slopeFranceSmall.png
https://www.dropbox.com/s/b52k5co46ujmpt7/slopeFrance.jpg
ASTER data are not really suitable to derive a DEM, your example is
another demonstration that an ASTER-derived DEM contains artefacts.
SRTM DEMs are without these artefacts.
Markus M
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