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Andreas,<br><br>Check out http://mapserver.org/output/tile_mode.html. It mentions the parameter "<em>tile_map_edge_buffer</em>". That addresses the issue you are experiencing. However, this is only available from MapServer 6, whereas you are using mapserver 5.6.5.<br><br>You may want to defer this operation to a cache renderer ,e.g. TileCache or MapProxy. You can configure these in such a way that they will request an image slightly bigger than 256x256 and will cut out a map tile at 256x256. Furthermore, for labelling purposes these cache renderers typically request even larger images (e.g. 1300*1300), cut off a 10 pixel border to counter the effects your are experiencing and then slice the remaining image 1280x1280 into 25 map tiles 256x256.<br><br>This cache renderers prove these advantages:<br>- less requests to MapServer at rendering time (only 1 large one instead of 25 small ones)<br>- better labelling<br>- no map tile creation upon each request, but map tiles are simply delivered from cache.<br><br>Hope this helps.<br><br>Kind regards,<br><br>Edward<br><br><br><br><div>> From: andreas.heckwolf@menturagroup.com<br>> To: mapserver-users@lists.osgeo.org<br>> Date: Fri, 18 Nov 2011 00:44:03 +0200<br>> Subject: [mapserver-users] circular symbol for roads at border of tiles<br>> <br>> Hi all,<br>> <br>> I am using mapserver 5.6.5, as installed on Debian stable, to render<br>> tiles (WMS) to an OpenLayers map. Streets are rendered with a circular<br>> symbol. Roads going across tile borders do have at the border a circle<br>> visible. Please see picture at:<br>> <br>> http://andreas.menturagroup.com/MapTilesProblem.jpg.<br>> <br>> I understand what is happening, and why. Is there any way to avoid this,<br>> or a better way of rendering streets?<br>> <br>> Thanks,<br>> <br>> Andreas<br>> <br>> <br>> Here my SYMBOL definition and the styles:<br>> <br>> SYMBOL<br>> NAME "line_solid"<br>> TYPE ellipse<br>> POINTS 1 1 END<br>> FILLED true<br>> END<br>> <br>> <br>> Then for the streets layer I have defined the following styles:<br>> <br>> STYLE<br>> SYMBOL 'line_solid'<br>> COLOR 130 130 130<br>> SIZE 12<br>> END<br>> STYLE<br>> SYMBOL 'line_solid'<br>> COLOR 255 255 200<br>> SIZE 10<br>> END<br>> <br>> <br>> <br>> MapServer version 5.6.5 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP<br>> OUTPUT=SWF OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE<br>> SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT<br>> SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER<br>> SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS<br>> SUPPORTS=RGBA_PNG INPUT=EPPL7 INPUT=POSTGIS INPUT=OGR INPUT=GDAL<br>> INPUT=SHAPEFILE<br>> <br>> <br>> -- <br>> \_________________________________________________________________<br>> Dipl.-Ing. Andreas Heckwolf Voice : +358 40 5847 445<br>> Mentura Group Oy Fax: +358 424480 800 <br>> Lönnrotinkatu 32 A 26 00180 Helsinki www.menturagroup.com<br>> <br>> _______________________________________________<br>> mapserver-users mailing list<br>> mapserver-users@lists.osgeo.org<br>> http://lists.osgeo.org/mailman/listinfo/mapserver-users<br></div> </div></body>
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