On Thu, Feb 25, 2010 at 9:21 AM, baobazz <baob...@hotmail.fr> wrote: ... (welcome!)...
> Initially, I wanted to vectorize an image > After having imported it, I tried to thin it through the r.thin command. > But the image produced being too big, it caused errors on my computer. What kind of error exactly? You seem to use Windows, which version of GRASS? > To solve my problem, I decided to reduce my location resolution: res=2, then > that of my raster with r.resample... > > The problem is that my resampled raster output is empty. > When typing r.info raster.resampled, I get: > r.info raster.resampled2 > ... > | Type of Map: raster Number of Categories: 0 > | Data Type: CELL > | Rows: 500 > | Columns: 500 > | Total Cells: 250000 > | Projection: Lambert Conformal Conic > | N: 6133000 S: 6132000 Res: 2 > | E: 1235000 W: 1234000 Res: 2 > | Range of data: min = NULL max = NULL ... > | r.in.gdal input="C:/tests/GRASS/rasterToVect/BDP_08_1234_6134_010_L9\ > | 3.tif" output="raster" ... > What is strange is the null range of data... Yes, no good. > The r.info for my raster input, not resampled is: > r.info raster6133_2 ... > | Rows: 10000 > | Columns: 10000 > | Total Cells: 100000000 (same position) > | Range of data: min = 0 max = 1 One thing I don't understand: Why do you use r.in.gdal after r.resample? Please outline the workflow to be better able to help you. Markus _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
