Etienne you can gdal_rasterise the polys into a alpha band, then add your alpha band to your image in a vrt.
Brian On Tue, 2011-12-06 at 19:59 -0200, Etienne Tourigny wrote: > > A related question: How can I effectively mask (mark as nodata) raster > pixels inside a polygon? For example, I would like to set the pixels > of the South American map to nodata inside the political boundaries of > Brazil, from a shapefile. _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev