Mapserver Extents

[Fawcett, David]

Olly, 

The EXTENT is defined in the UNITS of the output projection, (the
projection block that you define in the MAP object of your mapfile).  

It sounds like you may have data layers that are in different
projections.  MapServer can display all of them together if you define
the projections properly in your map file.  To do this, define a
projection in your MAP object, this is the projection that you want our
output map to be in.  

Then, place a projection block in each layer, this should contain the
definition for the projection that the data layer is currently in.  

I am not sure what you mean by three and six figures.  I would suggest
trying to implement projections in your mapfile and if that doesn't
work, post relevant pieces of your mapfile to the list so we can look at
the specifics of your problem.  

David.

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Oliver Ishmael
Sent: Thursday, September 29, 2005 7:53 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Mapserver Extents


Dear all,

Unfortunately, i'm still having the same problems with the extents. I
used 
gdalinfo as directed to get the extents of my data layer (thanks for
that!), 
however, when i enter these into my mapfile, the layer is still not
visible.

Is there some kind a general guide for extents - i'm at a loss :(

Is the extent dependent upon any of the following: Min Max-scale; Scale 
units; or EPSG projection codes;

is there anyway to convert between coordinates and Decimal Degrees (and
what 
general structure do these conform to...i have some cordinates which are
6 
figures and other mapfiles use 3 figure numbers for the extents).

Any help appreciated!

Cheers
Olly

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