[Tilecache] TMS question

[Guillaume Sueur]

> You're comparing an EPSG:4326 to a EPSG:900913 map... and thinking they'll
> have the same tile IDs? Is that what you're asking?

Did I ? My confusion must invade my postings too then ! 
Here's what I'm trying to do exactly :
I have a huge gdal2tiles cache (EPSG:4326) over France, and I retrieve
the tiles from it throught standard TMS requests.
I have a TileCache of a WMS layer in EPSG:4326 and I want to overlay it
to the previous. 
I thought, kindly, that using the same TMS request (i mean z/x/y.png) on
TC would send me back the correct tile. But it doesn't. At all. 
Here is my Tc layer's definition :
type=WMS
url=some_url
layers=my_layer
extension=png
srs=EPSG:4326
extent_type=loose

I can't guess where the problems comes from...

Thanks for your help

Guillaume

> 
> -- Chris
> 
> > Regards
> > 
> > Guillaume
> > 
> > 
> > Le lundi 11 janvier 2010 à 13:33 -0500, Christopher Schmidt a écrit :
> > > On Mon, Jan 11, 2010 at 03:42:35PM +0100, Guillaume Sueur wrote:
> > > > Hi,
> > > > 
> > > > I'm wondering about the TMS grid used in TC. The request I see here
> > > > (http://labs.metacarta.com/wms-c/tilecache.py/1.0.0/basic/5/32/23.png)
> > > > doesn't match with what I see there
> > > > http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection/
> > > > for that area (north-east spain). 
> > > > 
> > > > Actually, does TileCache follow a specific TMS grid ?
> > > 
> > > Not sure why you'd expect TMS and Google to be the same; Google is indexed
> > > from the top left corner, TMS from the bottom left.
> > > 
> > > Regards,
> > 
> > 
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