Hi all :In fact I have post this question,but not got a answer/ I am using win grass 6.3, when export the raster data to tiff ,I can use two command > 1
1) r.out.gdal use this command the tiff I got is blank,and I am sure that this tiff has the correct crs, since I have use the gdalinfo command to test the black blank tiff. 2) r.tiff use this command the tiff I got has not crs (Coordinate System),although I can see the data(the lines of the road, it is not blank). And before I export the data,I use the g.region command to identifier the region. So ,I wonder the problem is my fault or something else.
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