[mapserver-users] Label text always clipped by tiles

[Gregor at HostGIS]

> I was using TileCache, but I switched it off to debug this problem. If
> TileCache generates larger tiles, will there still be clipped labels?
> Just fewer clipped labels? I don't think this is a workable solution
> for me, but if I have the time I'll try it.

Correct; there would be FEWER labels clipped (if you force them and 
allow partials) or missing (if you disallow partials).

How many fewer, depends on how large you make your meta-tiles. If 
they're 5x5, that's a significant reduction in the number of tile edges. 
If you really turn up your MAXSIZE in your mapfile, you could 
potentially make 10x10 meta-tiles; that's 1% as many tile edges.

You could also make your tiles larger. If you have 512x512 tiles, and 
10x10 meta-tiles, that's a HUGE reduction in the number of tile edges 
over single 256x256 tiles.

The only method I know that would eliminate ALL tile-edge artifacts, 
would be to eliminate tiling, e.g. singleTile:true in OpenLayers. Not 
that that's a great solution either, but it is sometimes the only way.

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