change projection through CGI parameters

[Matthew Perry]

Ning,

 Are you using mapserver as a CGI or via mapscript? Using mapscript
might be more flexible for this kind of task. If you're using the CGI,
it's possible to change mapfile parameters via URL:

http://mapserver.gis.umn.edu/docs/reference/cgi/controls
and scroll down to "Changing map file parameters via a form or a URL"

 I haven't tried this out so you may need to adjust it but you could
try &map_projection="proj=latlong" .

Also, keep in mind that you'll have to adjust the extents of the image
since that will change with the projection.

matt

On 2/10/06, Ning Liu <ninliu at indiana.edu> wrote:
> I am trying to build a mapserver application in which ther users can specify
> the parameters of the projection and change the map projection.
> Anybody know is it possible with mapserver?
> Thanks a lot.
>
> -- Ning
> Computer Science Department
> Indiana University
>


--
Matt Perry
perrygeo at gmail.com
http://www.perrygeo.net