[geos-devel] Buffering Multipolygons

[strk at refractions.net]

On Tue, May 17, 2005 at 06:05:50PM +0200, strk at refractions.net wrote:
> On Tue, May 17, 2005 at 08:19:06AM -0500, Steve Lime wrote:
> > What flavor of script or test data? Do you really want a perl/mapscript
> > script?
> 
> No, just an .sql script containing table creation, data load (WKT geoms)
> and the failing call to GeomUnion(). The dataset should be the
> smallest possible reproducing the problem.

Err.. sorry, the call is to buffer() not to GeomUnion,
so a single command should be able to show the problem and let us
test it on other versions.
Something like:
 select buffer('MULTIPOLYGON...', #);

--strk;

> 
> --strk;
> 
> > 
> > >>> strk at refractions.net 05/17/05 1:33 AM >>>
> > If you send a small script we can test it.
> > --strk;
> > 
> > On Tue, May 17, 2005 at 01:02:58AM -0500, Steve Lime wrote:
> > > Hi All: I'm wondering if someone can confirm that buffering a
> > > multipolygon works with GEOS 2.1.1. I'm testing my conversion code and
> > > am having problems with just this case: simple polgons with/without
> > > holes work fine, anything with multiple outer rings does not (bus
> > error
> > > on Mac OS). The conversion code must be close because computing a
> > convex
> > > hull on the same test shape works fine.
> > > 
> > > I've attached a small graphic that shows the multipolygon (with GEOS
> > > computed convext hull)...
> > > 
> > > Steve
> > 
> > 
> > > _______________________________________________
> > > geos-devel mailing list
> > > geos-devel at geos.refractions.net
> > > http://geos.refractions.net/mailman/listinfo/geos-devel
> > 
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