[OpenLayers-Users] TileCache and KaMaps

[Tim Schaub]

> After spending last night hacking with Schuyler, I'm now 
> convinced that TileCache supports transparency correctly, and 
> that metaTiling is now of a quality where I trust it. It 
> doesn't do mapscript hacks to prevent labelling in the 
> metaBuffer area, but presuming a relatively small metabuffer 
> (and PARTIALS OFF, which doesn't cooperate well with ka-Map) 
> the difference between ka-Map and TileCache behavior is 
> probably minimal, and the benefits of switching are, in my 
> humble opinion, significant.

Note that you don't need to rely on mapscript to prevent labels in a buffer
around the edge of your map.  If you're using MapServer to generate your
tiles, there's a mapfile metadata hack for that (since 4.6):

WEB
  ...
  METADATA
    "labelcache_map_edge_buffer" "10" #pixels
  END
END

also, don't forget

  PARTIALS FALSE

Keep an eye on mapserver bug #1353 if you're hesitant to use "experimental"
features (http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=1353).

Tim

> 
> I look forward to hearing any questions or concerns you have 
> about making a switch.
> 
> Regards,
> --
> Christopher Schmidt
> MetaCarta
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