Thanks again for the attention and patience, but I'm still not succeed. A checklist: 1) on-the-fly CRS transformation turned off -> OK 2) when I load the raster layer I indicate the CRS WGS84 (+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs) Once it's loaded I change the map color from grey to false color 3) when I create the vector layer to place the polygon I select CRS WGS84
(+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs) 4) In the Menu Raster / Extraction / Clipper I indicate the raster layer, the mask layer (vector), the name of the new file and, once more I select CRS WGS84 (gdalwarp -q -cutline /mnt/Antonio/SIG/TSM/SelectArea.shp -of GTiff /mnt/Antonio/SIG/TSM/32610_2.asc /mnt/Antonio/SIG/TSM/TSMArea) Now I'm getting: "Warning : the input vector layer has a SRS, but the source raster dataset does not. Cutline results may be incorrect." So, what is going wrong? The asc (raster file) and the shape with the polygon can be downloaded at http://dl.dropbox.com/u/755659/TSM.rar Thanks in advance. Regards, Antonio 2012/9/18 skampus <stefano.cam...@regione.piemonte.it> > hi all, > all layers must have same SR > > > > -- > View this message in context: > http://osgeo-org.1560.n6.nabble.com/getting-statistics-from-a-raster-layer-tp5002022p5002771.html > Sent from the Quantum GIS - User mailing list archive at Nabble.com. > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user > -- Antônio Olinto Ávila da Silva Biólogo / Oceanógrafo Instituto de Pesca (Fisheries Institute) São Paulo, Brasil
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