[postgis-devel] preserve topology while simplifying geometry

Fran├žois Weykmans fanfoi at gmail.com
Fri Apr 27 13:39:18 PDT 2007


On 24/04/07, Stefan Zweig <stefanzweig1881 at web.de> wrote:
> ...
> Maybe this could be a nice feature for a future release of postgis / geos, especially for the simplify(geometry, precision)-function: a simplification algorithm which preserves topology

You can look at http://siti.cmm.qc.ca/postgis/postgis-1.2.1.patch ;)
(using GEOS 3.0)

Provide :
simplify_geos(geometry,float8)
simplifytopologypreserve_geos(geometry,float8)

Use by SVG Map App : http://siti.cmm.qc.ca (technology preview)

Fran├žois Weykmans


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