[postgis-users] Polygon and north pole
pramsey at refractions.net
Mon Jul 16 06:45:54 PDT 2007
The IsValid function does not exist unless you have JTS/GEOS support.
Your geometry has nothing to do with this error message.
On the topic of your geometry, you can insert it, but in a planar
interpretation of lon/lat, which is what we have, it will not be
handled "right" in every case, and if it self-intersects in planar
space (a common situation for pole-covering things) it will be
"invalid". It will still be storable, though.
On 16-Jul-07, at 4:30 AM, Jørn Vegard Røsnes wrote:
> is it possible to insert polygons into PostGIS where the polygon
> "cross" the
> north pole?
> select isvalid('POLYGON((152.991022 78.938867,79.710092
> 62.226884,-9.980464 56.376708, 152.991022 78.938867))');
> ERROR: isvalid:: operation not implemented - compile PostGIS with
> JTS or GEOS
> Will it help to compile PostGIS with GEOS/JTS support?
> Jørn Vegard Røsnes
> postgis-users mailing list
> postgis-users at postgis.refractions.net
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