[gdal-dev] Merge all features in polygon shapefile with gdal

Luke lukepinnerau at gmail.com
Mon Jul 6 22:03:49 PDT 2015


Remove the group by and it will ignore the attributes.

    ogr2ogr output.shp input.shp -dialect sqlite -sql "SELECT
ST_Union(geometry) FROM input"


Steven Lutz wrote
> ...
> this is what I've come up with:
> |ogr2ogr output.shp input.shp -dialect sqlite -sql
> "SELECT ST_Union(geometry), dissolve_field FROM input GROUP BY
> dissolve_field"|
> it looks to me that it is trying to do this operation based on specific 
> attribute entries but I'm looking to ignore the attribute entrie and 
> make all features into one.

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