I'm trying to dissolve a shapefile according to a field using Python 2.7.10 and I don't want to use ArcPy.
Is there any way to do this using GDAL/OGR?
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1take a look here: gis.stackexchange.com/questions/149959/…– MatejOct 28, 2015 at 19:26
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2Command line ogr2ogr solution at Dissolve/aggregate polygons with ogr2ogr or gpc?, should be adaptable to pure python solution without too much effort– matt wilkieJan 12, 2016 at 23:43
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1 Answer
Using the QGIS Processing GDAL Dissolve algorithm and checking the log, you can find something like this:
ogr2ogr /tmp/OUTPUT.shp /tmp/points.shp -nlt PROMOTE_TO_MULTI -dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, \"DissolveID\" FROM \"points\" GROUP BY \"DissolveID\"" -f "ESRI Shapefile"
