[geos-devel] GEOS-3.0.0RC2 Buffer Error

[strk at refractions.net]

Oh, btw... your geometry is invalid:

NOTICE:  Ring Self-intersection at or near point 608038 227925 227925

It was by luck if it worked with 2.2.3 (maybe an effect of some
rounding?)

--strk;

On Tue, Nov 14, 2006 at 12:40:53PM +0100, strk at refractions.net wrote:
> On Mon, Nov 13, 2006 at 09:55:32AM +0100, Düster Horst wrote:
> > GEOS-3.0.0RC2 produces incorrect results when the attached shape-polygon
> > imported to postgis is buffered with an bufferdistance of 0. 
> > 
> > 1. Import the shape to PostGIS
> > 2. Buffer the Polygon with: create table test as select
> > buffer(the_geom,0) as the_geom
> > 3. Take a look at the result, you will see incorrect filled areas.
> > 
> > The same procedure with GEOS-2.2.3 produces correct results!
> 
> Could you also post the *correct* result ?
> 
> --strk;