On Thu, Feb 03, 2011 at 10:25:08AM +1030, james.sew...@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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