Ian Turton ha scritto: > On 11/28/06, Szakacs, Balazs <[EMAIL PROTECTED]> wrote: > >> If I'm trying to insert a multi polygon but I get an exception: >> java.lang.IllegalArgumentException: geometries must not >> contain null elements at ….. >> >> >> >> It's happened only if the inner boundary linear ring touches the outer >> boundary ring. I didn't find anything in GML document about the common point >> of inner and outer rings. > > That's definitely not allowed in which ever spec it is that defines > Polygons - I forget which spec JTS (and thus GeoTools) implements for > geometry.
Simple feature specification 1.1, and yes, if it's a single point, you can represent the same geometry with a single outer loop, whilst if it's multiple points, you can represent the same as a multipolygon (two or more polygons touching) (see page 2-9 in the spec). Cheers Andrea Aime ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
