Hi Carlos Is it possible your map units are in degrees (and your elevation units are in meters)? If so, you could set the option '-s 111120' (see http://www.gdal.org/gdaldem.html)
Regards, Marco Am Dienstag, 16. August 2011, 03.47:00 schrieb Carlos Cerdán: > Dear QGIS list members: > > I've got some ASTER_GDEM data > (http://www.gdem.aster.ersdac.or.jp/search.jsp) and I was testing the > /DEM terrain models/ GDAL tool with my DEM. > > The shaded relief map that I got is ok, but slope map is wrong: this one > has 0 (zero) and over 89 degrees only, (there are not 1, 2, 3....88) . > I've tried all options but I got always a 0 and 89 (and decimal) degress > map. > > I've tried with the r.slope module (GRASS pluggin) and it does a good > job: I get a full-slope map. > > My distro: QGIS 1.7 on Ubuntu 11.04. A month ago I fixed it for the TIFF > images problem reported here: > http://osgeo-org.1803224.n2.nabble.com/gdal-1-8-0-no-tiff-support-anymore-i > n-Ubuntu-11-04-Natty-tc6365327.html It is relationed with this slopes > problem? > > As I said, the GRASS pluggin did the right work, but I'd liked GDAL tool > does too. Perhaps I did something wrong or Is something wrong with this > tool? > > Thank you in advance for sugestions > > Regards from Cajamarca - Perú > > Carlos Cerdán -- Dr. Marco Hugentobler Sourcepole - Linux & Open Source Solutions Churerstrasse 22, CH-8808 Pfäffikon SZ, Switzerland [email protected] http://www.sourcepole.ch Technical Advisor QGIS Project Steering Committee _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
