It looks like you have broken coastline polygons (processed_p.shp) . I have seen similar artifacts on openstreetmap.org recently.
On 12 December 2011 19:10, Dirk Stichling <[email protected]> wrote: > Hi. > > I have setup a mapnik rendering server and it already works quite well. > But there are some strange things as you can see in the following example: > http://www.mytracks4mac.com/screen1.png > > As you can see the sea is sometimes blue and sometimes not. I also have a > similar effect in other zoom levels where the forrest is sometime green but > sometimes just grey. > > Do you have any idea of what is going wrong? > > Thanks, > Dirk > > _______________________________________________ > Mapnik-users mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/mapnik-users >
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