Hi everybody,
I'm a postgis new user and I would like to submit here a problem I encounter. Here's what I do : from a polygon layer I merge some of them (with ST_UNION) into bigger ones according to an attribute value, then I make an exterior ring (with ST_Collect(ST_ExteriorRing())) around these and then I fill these rings (with ST_Contains) with all the original polygon that are inside ( I do this to have a coherent area without the holes I would have otherwise because of some data particularities). All this works very fine for 99.9 % of the polygons but fails on filling the rings for a few of them. When I look at these I see that they have a loop which is a probably due to a wrong geometry in the original polygons. Does any of you know how to deal with this ? Thanks for your help Didier _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
