Thank for the link. I already see the known bug in TPS. But my question concerned a input geometry who is invalid. For example : POLYGON ((8 25, 24 39, 35 26, 15 11, 33 3, 56 30, 35 36, 47 44, 43 19, 8 25)) The geometry is invalid because there are a intersection. So when i use TopologyPreservingSimplifier, the result is also invalid, expect when i have a high distanceTolerance.
Date: Mon, 31 Mar 2014 11:32:32 -0700 Subject: Re: [Jts-topo-suite-user] TopologyPreservingSimplifier geometry is invalid From: [email protected] To: [email protected] CC: [email protected] Can you provide the input you are using? There is a known bug in TPS that can result in invalid resutls. See http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/simplify/TopologyPreservingSimplifier.html On Mon, Mar 31, 2014 at 5:54 AM, Mireille Lecoeuvre <[email protected]> wrote: Hello JTS list, I'm a beginner and i have a question. I use the class TopologyPreservingSimplifier with this method: - public static Geometry simplify(Geometry geom,double distanceTolerance) But if my input geometry is invalid so the output geometry is invalid but the documentation of this class says : "ensuring that the result is a valid geometry". It's not specify if the output geometry may be degenerate or invalid. Could you confirm if it's a bug or it's normal? Thank you very much Mireille ------------------------------------------------------------------------------ _______________________________________________ Jts-topo-suite-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jts-topo-suite-user
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