Re: [Pymag-devel] Unable to render Polygons

[Josh <jo...@fe...>]

Oops, I had another think about that, and realised a 3 pointed closed  
polygon is actually more like a straight line ;)

Is it possible to just discard bad polygons, seeing as they don't  
render anyway, and just break the map?

Josh



Quoting jo...@fe...:

> I've just tried the latest code from svn, with mixed results. Some of
> my maps have polygons rendering again, but others that warn about
> Improper polygons now crash Mapsend/Vantagepoint.
>
> Some of the warnings I can understand - polygons with only 2 points,
> or polygons that are 'open', but one example I saw has me confused...
>
> I got this warning one one tonight -
> WARNING Improper polygon found: [(144.844255, -38.373168800000002),
> (144.8432851, -38.373168800000002), (144.844255, -38.373168800000002)]
> That shows a polygon with 3 points, and two of them have the same
> coordinates? That should be a valid polygon unless I'm missing
> something.
>
> The nodes/way relating to that error are:
>
> <node id="172752298" timestamp="2009-02-25T17:02:53Z"
> lat="-38.3731688" lon="144.844255"/>
> <node id="172751478" timestamp="2009-02-25T17:02:53Z"
> lat="-38.3731688" lon="144.8432851"/>
>
> <way id="16711763" timestamp="2009-02-25T17:02:53Z">
>      <nd ref="172752298"/>
>      <nd ref="172751478"/>
>      <nd ref="172752298"/>
>      <tag k="created_by" v="Potlatch 0.5d"/>
>      <tag k="leisure" v="park"/>
>    </way>
>
>
> Regards,
> Josh
>
>
>
>
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