Matthew, 

Look into metatiles 
http://geowebcache.org/trac/wiki/metatiles 

Which you can use tileCache to create with mapnik. 

Pretty much the only way to get good labels that I've found. 
jay 

----- Original Message ----- 
From: "Matthew Rushton" <[email protected]> 
To: [email protected] 
Sent: Tuesday, December 23, 2008 8:10:45 AM GMT -08:00 US/Canada Pacific 
Subject: [Mapnik-users] normal label rendering? 

Hi, 
I'm using mapnik (it's great!) with open street map to render 64x64 tiles. The 
problem I'm bumping up against is labels that span tiles which in some cases 
are not being rendered which produces half labels on my map. I realize that for 
64x64 tiles the tiles I need to render must be larger for this exact problem 
and this makes sense. However to get labels to properly render without getting 
cut off I need to render 512x512 tiles. This is very expensive and seems really 
wasteful, given the entire label in all cases would be inside a much smaller 
tile. My question before I go searching through code is, is this normal? What 
kind of buffer is needed to properly render tiles. Any insight into this would 
be great! Thanks so much. 
-Matt 


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