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Numbers in any programming language does not have "absolute" precision. As they must be represented as bits in the computer hardware its precision is limited. Anyway review this links, because maybe they can help you: http://comments.gmane.org/gmane.comp.gis.gdal.devel/19331 http://lists.osgeo.org/pipermail/gdal-dev/2011-August/029793.html


In your solution you mix geometries and predicates of ogr and Shapely With Shapely only (intersection(), intersects()) from shapely.geometry import Point, LineString, mapping geom1 = LineString([(0, 0), (0, 1)]) geom2 = LineString([(1, 1), (-1,-1)]) intersection = geom1.intersection(geom2) # geo_interface -> GeoJSON mapping(intersection) {'type': ...

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