Dissolve using GDAL/OGR?

Question

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?

take a look here: http://gis.stackexchange.com/questions/149959/dissolve-polygons-based-on-attributes-with-python-shapely-fiona — Matej, Oct 28 '15 at 19:26
Command line ogr2ogr solution at Dissolve/aggregate polygons with ogr2ogr or gpc?, should be adaptable to pure python solution without too much effort — matt wilkie, Jan 12 '16 at 23:43

score 3 · Answer 1 · answered Nov 14 '19 at 11:31

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"

Dissolve using GDAL/OGR?

1 Answers1