On Sat, Jan 16, 2010 at 3:46 PM, David Benman <[email protected]> wrote: > > I am programming a flight simulator and need to create landscape imagery. I > have downloaded the New York State orthoimagery available at > http://www.nysgis.state.ny.us/gateway/mg/2006/onondaga/ > > I now need to combine several image tiles into one,
This would be the r.patch command: http://grass.osgeo.org/grass64/manuals/html64_user/r.patch.html Procedure: g.region rast=map1,map2,map3[,map4...] -p r.patch input=map1,map2,map3[,map4...] output=hugemap > reduce their resulting size That's r.resamp.stats - Resamples raster map layers to a coarser grid using aggregation. http://grass.osgeo.org/grass64/manuals/html64_user/r.resamp.stats.html g.region res=xx # with xx a number which is the destination pixel resolution r.resamp.stats input=hugemap output=hugemap_lowres Then export (e.g. GeoTIFF): r.out.gdal input=hugemap_lowres output=hugemap_lowres.tif >, etc. How can I do this with Grass? I have never used Grass, but hope > somebody could point me to some applicable tutorials or outline the major > steps. Hope above gives an indication. Otherwise there is material here to read: http://grass.osgeo.org/gdp/ Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
