Changing Output Projection

[Frank Warmerdam]

Bill Thoen wrote:
> I'm pulling a polygon layer from Postgis and displaying it in MapServer, 
> but I can't seem to change the output projection. The polygon layer's 
> native coordinate system is WGS84, and when I check MapServer with th 
> e-v switch it says it supports PROJ. The unprojected map displays fine 
> if I use decimal degrees, but it seems to be ignoring my PROJECTION 
> settings the map file. Can someone tell me what's wrong? Here's the map 
> file:

Bill,

I believe the problem is that you are declaring the layer data to be UTM too.
The PROJECTION definition on the layer should be the source coordinate system
while the PROJECTION definition on the map should be the desired output
projection.  So change the layer to

PROJECTION
   "+proj=latlong +datum=WGS84"
END

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org