On Thu, Jul 12, 2007 at 03:07:12PM +0200, Willy-Bas Loos wrote: > Are there any illustrative drawings available for the (GEOS or not) Geometry > Relationship/Processing Functions in postgis?
See "OpenGIS Implementation Specification for Geographic information - Simple feature access - Part 1: Common architecture," in particular "6.1.15 Relational operators." I've found the DE-9IM expressions at least as helpful as the diagrams in understanding the relational operators. http://www.opengeospatial.org/standards/sfa -- Michael Fuhr _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
