[MS4W-Users] ms4w Proj setup

Brent Fraser bfraser at geoanalytic.com
Tue Jun 15 09:48:05 EST 2010

Chris Lam wrote:
> Hello list,
> I have a couple basic questions about proj4 in ms4w.  I have located a proj
> directory in my ms4w folder.  Is this the Proj4 js library that Mapserver
> uses to request WMS images in a certain projection prior to sending it to
> the client?  I am using OpenLayers to overlay a Mapserver WMS in EPSG:4326
> over a Bing Maps layer but am receiving blank 256x256 tiles from Mapserver. 

Do you mean you set the LAYER projection to 4326 (good) or the MAP projection to 
4326 (bad) in  mapserver's .map file?

> I suspect that my ms4w setup is not serving the WMS image tiles to the
> client in spherical mercator, despite my having added the spherical mercator
> projection definition to the proj/nad/epsg file and including the SRS in my
> mapfile.
> Do I have to do anything else after installing ms4w with regards to getting
> a properly setup proj4 library, or is it already setup automatically and
> will handle reprojecting without any further steps? 

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