[postgis-users] Intersecting lines to Polygons

[chlists]

Hi list,

I'd like to combine a global compilation of line data which intersect into a global polygon dataset. ArcGIS has a tool called 'Features to Polygons' which does this in one step for which I have yet to find an equivalent in PostGIS. ST_MakePolygon and ST_Polygon require closed linestrings. I have simple line features which randomly connect like in the attached screenshot. There are no attributes which describe which polygon a single linestring belongs to. Can this be done easily or does this involve building topologies? Any pointers much appreciated.

Thanks,
Chris




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