after importing try setting the computation bounds with e.g. g.region rast=studyarea
raster mapcalc and output work on the current region settings. Hamish --- On Wed, 6/17/09, Milton Cezar Ribeiro <[email protected]> wrote: > From: Milton Cezar Ribeiro <[email protected]> > Subject: Re: [GRASS-user] Problem exporing rasters > To: "Richard Feldman" <[email protected]> > Cc: "[email protected]" <[email protected]> > Date: Wednesday, June 17, 2009, 1:27 AM > Hi Richard, > > Send the outputs of the command below to the > list: > > g.region -p > r.info studyarea > r.info elevation > r.info newelevation > > This will help the helpers :-) > > Bests, > > milton > brazil=toronto > > 2009/6/16 Richard Feldman <[email protected]> > > Hi, > > I have two rasters. One is an elevation dataset from > Worldclim, imported into GRASS using r.in.bin. The other is > a MODIS raster, which I had previously worked on in ArcGIS. > Consequently, I imported this raster (.adf) into GRASS using > r.in.gdal. Both rasters display and manipulate properly in > GRASS. I used r.mapcalc to mask the raster > > > newelevation=if(studya...@mapset, elevat...@mapset) > > and wished to export this new raster as an ascii grid. When > using either r.out.gdal or r.out.arc, the exported file is > only 1KB and does not contain any data e.g. elevations). > (Again, this new raster displays fine in GRASS). With > r.out.gdal, I have tried both .grd and .tif formats as well > as “byte,” “int16,” “uint16” and “int32” > file types. Every time the export takes 0 sec and produces a > 1-2KB file. > > > I have tried exporting elevation.dem from the spearfish > dataset and it exports fine. I'm using GRASS6-SVN on > Windows Vista. > > What am I doing wrong? > > > Richard > Feldman_______________________________________________ > > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > > > > > -----Inline Attachment Follows----- > > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
