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 <[EMAIL PROTECTED]> 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 [EMAIL PROTECTED] http://www.perrygeo.net
