Thanks to Paul and Micha for the help. About this: I defined my location using this image but instead of being reprojected with PROJ4 extension I used EPSG:3763 and then r.in.gdal. Then, using the same original image (in UTM) I reprojected to this CRS but using PROj4 extension (showed in my original message).
What is the correct one? the bellow expression or the EPSG:3763 in order to reproject an image? It was only a warning. It imported the image nevertheless, without using -o option. 2010/5/31 Micha Silver <mi...@arava.co.il> > On 05/31/2010 07:25 PM, Kim Besson wrote: > > Greetings > > Following a few suggestions made at this list I'm using gdalwarp to > project a few landsat images and only then yusing r.in.gdal. > > I'm using this expression to reproject image: > gdalwarp -t_srs "+proj=tmerc +lat_0=39.66825833333333 > +lon_0=-8.133108333333334 +k=1 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs > " L71203033_03320001023_B10.TIF landsat_out.tif > > And when I run r.in.gdal I get this warning: > Datum <unknown> not recognised by GRASS and no parameters found > Projection of input dataset and current location appear to match > > What does this means? > > There's no +datum= parameter in the CRS definition, so the new, > projected tif has no datum information. But, if you're sure the above > parameters are correct, you can ignore the warning and tell GRASS to ignore > the warning with the "-o" option to r.in.gdal. > BTW, how did you define the GRASS Location? with the EPSG:3763 or the above > definition? If so, then you surely should have no problem importing with the > -o (over-ride projection check) option. > > Thanks > kim > > This mail was received via Mail-SeCure System. > > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user > > > This mail was received via Mail-SeCure System. > > > > > > > -- > Micha Silver > Arava Development Co. +972-52-3665918 > http://www.surfaces.co.il > >
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