[mapserver-users] Difference in appearance between "mode=map" and WMS

[Julien-Samuel Lacroix]

Hi,

I guess would be that the WMS use non-square pixels. So if your BBOX x/y 
  (rectangle in your case) doesn't match you WIDTH/HEIGHT ratio (square 
in your case) the map will appear stretched. MapServer will actually 
stretch the map to fit the extent in the WIDTH/HEIGHT.

The mode=map don't do that. If your extent doesn't have the same ratio, 
it adds some degree in your extent to fit the size.

Make sure your BBOX and EXTENT are a square in your requests and retry


Julien

Roger André wrote:
> Hi All,
> 
> I think I'm having an instance of cranial flatulation, but maybe not.  
> Hopefully you can set me straight.
> 
> I need to create an image with Mapserver using mapscript that I can then 
> georeference manually and use in another application.  It needs to look 
> exactly the same as the image I can already generate via a WMS call that 
> looks like this:
> 
> http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/hydro/hydro.map
> &SERVICE=WMS
> &version=%221.1.1%22
> &REQUEST=GetMap
> &LAYERS=imagery
> &STYLES=&BBOX=-125,39,-108,54
> &WIDTH=600
> &HEIGHT=600
> &FORMAT=png
> &SRS=epsg:4326
> 
> I'm testing my mapscript parameters using a simple "mode=map" call to 
> Mapserver, and the results I'm getting so far don't match the appearance 
> of the WMS output at all.  My mapfile has the following extent and 
> projection info in it:
> 
>   PROJECTION
>     "init=epsg:4326"
>   END
> 
>   EXTENT -125.0  39.0 -108.0  54.0
>   SIZE 600 600
> 
> In addition to the mapfile projection specification, I am also 
> specifying the same projection info in each of my LAYERS as well.
> 
> Is it possible to do what I'm trying to accomplish here?
> 
> Thanks,
> 
> Roger
> --
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> mapserver-users mailing list
> mapserver-users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapserver-users

-- 
Julien-Samuel Lacroix
Mapgears
http://www.mapgears.com/