[Tilecache] SRS parameter

[Christopher Schmidt]

On Tue, Mar 25, 2008 at 10:20:16AM +0100, Martijn van Oosterhout wrote:
> On Tue, Mar 25, 2008 at 8:55 AM, Mauclerc Anthony <A.Mauclerc at brgm.fr> wrote:
> > That solution could fit my needs. I am going to test it asap. Thank you.
> >  If I understand, the unique base layer (from a user point of view) actually corresponds to N layers (one for each projection). When the client asks for a tile, only one layer will match (the others have "wrong" projection for that request ; hopefully, those layers won't return a broken pink tile...).
> >  My last fear is a performance issue : if we request N layers, does it impact response time (or are layers with wrong projection efficiently ignored) ?
> 
> Simpy arrange for the client to only request the layer with the right
> projection...

Right. You're only going to have the layers turn on when they're
visible: either by using some kind of scale ranges, or by using a
zoomend event and turning off layers in some application level code, or
something like that.

Regards,
-- 
Christopher Schmidt
MetaCarta