[Mapserver-users] WMS BBOX vs. Actual Bounds

[Ian Turton]

At 08:56 08/01/2004 -0500, Ed McNierney wrote:
>Ian -
>
>I can't agree that this is poor behavior.  MapServer should also be
>expected to return a map in the PROJECTION requested, which is
>impossible under your scheme.  In WMS mode the SRS is part of the
>request and should be respected just as much as the WIDTH, HEIGHT, and
>BBOX parameters, shouldn't it?

Indeed - they are all important. However the WMS spec is very specific 
about how to handle this case and it says you must honour all the 
parameters. Otherwise people like the origianl poster are left not knowing 
what they got back.

>If you want the image "distorted", you're not looking for a map - you're
>making a picture.  If you can define the distortion in a
>cartographically accurate way (e.g. a picture), then it is indeed a map;
>but you can also provide MapServer with the definition of that
>projection and cause it to "distort" the image the way you want.

For example, suppose I'm displaying my picture/map on a display with non 
square pixels?

Ian

Ian Turton, Director, Centre for Computational Geography, University of 
Leeds, Leeds, LS2 9JT
http://www.geog.leeds.ac.uk/people/i.turton http://www.ccg.leeds.ac.uk 
http://www.geotools.org
+44 (0) 113 343 3392 fax: +44 (0) 113 343 3308