Kim Besson wrote: [snip] > 7- Now, export this raster.Since I want a Geotiff I used: > r.out.tiff input=train_raster00 at PERMANENT output=trainraster00a You must use r.out.gdal to get a GeoTIFF, r.out.tiff produces an ordinary tif image, not a spatial raster dataset. Markus M