Hi, I am using GDAL/OGR to find the links under a set of towns, on the whole France territory.
My links and my towns are stored on a Postgis database. For the moment I use the most precise request I can: - I make a union of all the polygons of the towns I am interested in - I send a request with GDAL to the Postgis database to get the links covered by the geometry - I read the result Would it be faster if I make a request for each town, instead of making the union of the geometries ? Would it be faster if I use a simple spatial filter (like a rectangle) instead of the precise geometry ? -- Alexandre Gacon
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