Le mardi 09 juillet 2013 23:30:19, William Hudspeth, Ph.D. a écrit : > Hello all, > > I am using gdaldem that came with the GDAL 1.7.3 version on Ubuntu > 12.04. I am trying to create slope maps with a command something like this: > > gdaldem slope -s scale=111120 source_DEM.tif target_SLOPE.tif
An error is "-s scale=111120" (which is interpreted as "-s 0"). It must be just "-s 111120" I've just added a validation check in the code so that it would now be reported as an error if you use the wrong syntax. > > the source DEM geotiff was created with gdalwarp, re-projecting a > National Elevation Dataset 30 meter, ESRIHdr formatted grid from > geographic-NAD83 to geographic-WGS84. Based on a thread I found on use > of 'gdaldem slope' on the web, the re-projection was attempted with both > a bilinear and cubic re-sampling method. > > The target geotiff has values of only 90 and Null. I am getting no > intermediate values (in degrees, the default). > > Thanks for any help in advance, > > Bill > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Geospatial professional services http://even.rouault.free.fr/services.html _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
