Which Projection to use?

[Fawcett, David]

If all of your data is in the same projection, you don't need to define
projections in your map file.  

One exception is that if you are serving the data up as a WMS or WFS,
you will need to define MAP and LAYER level projections.  You will
likely also need to add metadata at the LAYER and MAP? level that
includes information about the projection.  

David.

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of LITTLE Nelson
Sent: Monday, September 17, 2007 1:42 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Which Projection to use?


Hi all,

I have shape files which are in x,y coordinate form (units of meters)
and didn't think I needed any projection information because I was
dealing with such a small area, thus never defined any PROJECTION info
in my map file. Now I am getting the following error: 

[MapServer Error]: _msProcessAutoProjection(): WMS/WFS AUTO PROJECTION
must be in the format 'AUTO:proj_id,units_id,lon0,lat0' (got '').

I gather from the error message that I need to define at least a map
level projection entry, but I am not sure what I should use?

Any help much appreciated

Cheers,
Nelson

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