>Thanks a lot for taking you time to explain. > >So if Postgis actually not limit only to the simple-feature model the >ST_IsValid, >what kinds of geometries are InValid in PostGIS terms? > >So does this make my example non-compliant with OGC SFA? I'm not >topology expert and asking for the practical reasons, the software >that claims to be OGC-compliant cannot import such data correctly. If >such structures are indeed not covered by OGC SFA then I cannot do >anything, if they are allowed, than this is a software issue and it is >in fact not compliant.
You can use the ST_IsSimple to know if a geometry is simple-feature. If true it is simple-feature. After, if you geometry is ST_IsSimpe = true, you can test with ST_IsValid , to detect eventually invalidity for geometry. So you can detect if it is a simple-feature valid geometry. Andrea. -- ----------------- Andrea Peri . . . . . . . . . qwerty àèìòù -----------------
_______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
