[gdal-dev] Re: [mapserver-users] converting a multi-thousand
polygon shapefileinto a shapefile that just contains the exterior
neteler at osgeo.org
Thu Apr 30 04:09:38 EDT 2009
On Thu, Apr 30, 2009 at 6:27 AM, Rahkonen Jukka
<Jukka.Rahkonen at mmmtike.fi> wrote:
> What you want is the union of all the individual image polygons. At least it can be made with GIS applications like QGis or OpenJUMP. I don't know of any tool that could do it directly from command line but such can exist, though.
GRASS can do that (GUI and command line):
1. assign a common attribute value to all polygons
2. perform a dissolve.
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