Ian,
I interpreted your question a little differently than the other respondents, 
so, let me see if I understand your aim correctly, that is, 
1) to have the option of displaying your map re-projected to other coordinate 
systems, OR
2) to be able to display the numeric values for the center and extents of the 
maps

These are somewhat different aims, so if your aim is the 2nd option, then the 
code that Andy gave will do what you need.  If you simply want to have an 
alternate projection, then you can just set the projection of your map to the 
desired projection using the mapscript function setProjection(string 
proj_params, boolean bSetUnitsAndExtents), and mapserver should automatically 
re-project for you (provided that each of your layers has its projection 
specified).  You can find the documentation for this function in the 
phpMapscript/mapObj documentation on the mapserver web site.

Good luck,
r.b.

-----Original Message-----
From: UMN MapServer Users List [mailto:[EMAIL PROTECTED] On Behalf Of Ian Tidy
Sent: Sunday, June 10, 2007 9:13 PM
To: [email protected]
Subject: [UMN_MAPSERVER-USERS] Coordinate Conversion

Hi, 
I need some help with a small enhancement to my MapServer site.  I have been 
asked to display the map extents and centre in other coordinate systems.  
Currently the map window returns NZMG co-ordinates, I have been asked to supply 
these coordinates in NZTM, WGS84, and a few others.
I am using MapServer 4.6, MapScript and PHP on a Linux Server. 
Is there a MapScript function that will convert between coordinate systems or 
is there another way of doing this? 
Cheers Ian 
______________________
Ian Tidy
GIS Analyst / Developer
Works Asset Department
Napier City Council
Hastings St, Private Bag 6010, Napier, New Zealand
Phone +64-6-835-7579 Ext. 8115
Fax +64-6-834-4195
mailto:[EMAIL PROTECTED]
http://www.napier.govt.nz | http://maps.napier.govt.nz 


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