On Wednesday 18 March 2009 16:07:18 MS wrote: > I realize this goes into other software on a qgis list, but I wonder > with GDAL or GRASS one can accomplish this. > > It is really a raster clip that would work well, especially if the > next step is mosaic'ing the rasters. Are these quad ma
The charts are NOAA BSB rasters. Posted the same questions to the grass list and the response was positive: ------------------------------------------------ >> WIth r.in.poly you could "digitize" the area of interest, then use >> r.mask to remove the outside area, then r.patch everything. >> With a small script you could generate the ASCII polygon file >> for r.in.poly based on the map extent. -------------------------------------------------- Standalone gdal will not do it, especially if you want to automate the process and have concerns with the osmerander bug which in a marine charting environment could be rather interesting. The charts will in fact be tiled and made available via mapserver wms. The only issue for me is that I must learn each step with each application. Hence I went the easy route first to see what can be done with qgis. There is a very good new program out for creating tiles, maptiler.org and need to see and learn if the datum and projection can be changed. Its basically a front end to galtiler. Thanks for all the suggestions. -- /ch _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user