[Tilecache] Quick panning with overlays

[Christopher Schmidt]

On Wed, Nov 26, 2008 at 08:16:14AM -0800, Josh Livni wrote:
> I think 20 overlays is .. a lot.  especially from a dynamic WMS - must take
> a while to render, forget panning!  Instead of grouping them in OpenLayers
> (which would still mean 20 OL layers), can you group them in the WMS -- that
> helps with things like labeling as well..
> 
> As for caching, I assume something like TileCache was meant.  I think I
> actually saw a patch to tilecache recently that lets you do a form of
> 'cascaded wms' (eg merging of wms layers) in tilecache itself for that
> matter...

I believe this is something different from "Cascading" WMS, but yes,
TileCache now supports merging certain types of images after they have
been cached, thanks to a patch from FredJ... 

Regards,
-- 
Christopher Schmidt
MetaCarta