You can use SFCGAL and Straight Skeleton algorithm http://postgis.net/docs/ST_StraightSkeleton.html
It may not do what you want, depending on ... what you want ;-) Cheers, Rémi-C 2013/10/28 Rhys A.D. Stewart <[email protected]> > Greetings all, > > Does anyone have handy a function to determine the midline of a polygon? > > Regards, > > Rhys > Peace & Love|Live Long & Prosper > _______________________________________________ > postgis-users mailing list > [email protected] > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >
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