[OpenLayers-Users] base layers with different projection in the same map

[Phil Scadden]

WMS sends images. There is no realistic way to reproject the tile 
images. If you change the map projection, then OL will request the WMS 
servers to send tiles in the new projection. I understood that the 
layers would be re-requested if the base layer changed to a different 
projection but if not, you could force the redraw explicitly. If you 
have a WMS server that only sends 900913 (eg google) and one that only 
sends 4326, you then are basically stuffed - they cannot be mixed.

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