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List:       geos-devel
Subject:    Re: [geos-devel] RE: [Jts-topo-suite-user] JTS Topology error
From:       strk <strk () keybit ! net>
Date:       2011-02-03 8:14:14
Message-ID: 20110203081414.GK69558 () keybit ! net
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On Thu, Feb 03, 2011 at 10:25:08AM +1030, James.Sewell@lisasoft.com wrote:
> (Crossposting to GEOS list)
> 
> I see. So the difference between the GeometryNoder with a PrecisionModel and using \
> ST_Snaptogrid from PostGIS on the input geometries is that the GeometryNoder snaps \
> all nodes which are created by the noding process as it works? 
> This seems like an elegant solution to deal with the roundoff issues.
> 
> I gather GEOS doesn't expose noding functionality in this way? Is this something \
> that could possibly be added? From PostGIS would a command like ST_Node(geometry, \
> 10E-10) make sense / be plausible? Or would a better solution be to define the \
> precision for each geometry column?

Check the new ST_Snap() function in PostGIS and GEOS svn repository.

--strk;

  ()   Free GIS & Flash consultant/developer
  /\   http://strk.keybit.net/services.html
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