[GRASS-user] Re: Strange r.slope.aspect output of Aster dem

[leonidas]

Thank you for your answers!
I did g.region rast=aster_dem_ggrs and then I run again r.slope.aspect but
the problem still remains.

Here is the whole process.
1. I download the tiles from http://www.gdem.aster.ersdac.or.jp/search.jsp
2. Merge them: *gdalwarp ASTG* mosaic.tif*
3. Reproject the raster to greek grid: *gdalwarp -s_srs EPSG:4326 -t_srs
EPSG:2100 mosaic.tif dem_temp.tif*
4. Cut out the raster in my area of interest: *gdal_translate -projwin 89749
4490072 296874 4303842 dem_temp.tif dem_GGRS.tif*
5. Import in Grass:* r.in.gdal -o -e input=dem_GGRS.tif
output=aster_dem_ggrs*
6. Set the region resolution: *g.region rast=aster_dem_ggrs*
7. Finally I run *r.slope.aspect elevation=aster_dem_ggrs at data slope=slope
aspect=aspect*



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