[geos-devel] truncated buffer result

Pierre GIRAUD bluecarto at gmail.com
Fri Mar 10 06:49:09 EST 2006


Hum it works.

Note : the documentation doesn't match ?

----------
IsSimple(geometry)

    Returns 1 (TRUE) if this Geometry has no anomalous geometric
points, such as self intersection or self tangency.

    Performed by the GEOS module

    OGC SPEC s2.1.1.1
----------

On 3/10/06, strk at refractions.net <strk at refractions.net> wrote:
> On Fri, Mar 10, 2006 at 10:47:13AM +0100, Pierre GIRAUD wrote:
> > Hum, I didn't check that because it wasn't expected for those data.
> >
> > I feel embarrassed because issimple on this geometry returns true.
> >
> > SELECT  issimple(geometryfromtext('POLYGON((663194 1796327,663281
> > 1796368,663226 1796300,663194 1796327.1,663194 1796327))'));
>
> You should use isvalid() instead.
> --strk;
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