[postgis-users] distance between 2 polygons
Hi For each polygon I need to find the nearest polygon. I used ST_Distance(geometry, geometry) I succesfully did it but I want to make sure to interpret the result correctly Does A distance of 0 mean that the polygons touch each other or it means that their bounding box touch each other? What does a distance of 100 mean?. Is it the shortest distance between the 2 polygons or the distance between some random point on the polygon or on the surface? thanks Steve___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
Re: [postgis-users] distance between 2 polygons
Hallo Does A distance of 0 mean that the polygons touch each other or it means that their bounding box touch each other? From ST_Distance distance 0 menas that they are touching or overlapping each other What does a distance of 100 mean?. Is it the shortest distance between the 2 polygons or the distance between some random point on the polygon or on the surface? It is the shortest distance between two polygons. You can use ST_ShortestLine to find what that two points (first and last point in the resulting line) HTH Nicklas thanks Steve ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users ___ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
