WMS client/cascading wms bounding box p roblem

[Eijnden, B. van den (Bart)]

I don't know if this will solve your problem, but:

1) in your WMS request you need to use uppercase EPSG for the SRS (as
defined in the WMS spec)
2) in your PROJECTION blocks you need to use lowercase epsg (this is how
PROJ.4, the projection library used by Mapserver, expects it)

Best regards,
Bart

-----Oorspronkelijk bericht-----
Van: UMN MapServer Users List
[mailto:MAPSERVER-USERS at LISTS.UMN.EDU]Namens Robert William Jones
Verzonden: maandag 8 mei 2006 11:19
Aan: MAPSERVER-USERS at LISTS.UMN.EDU
Onderwerp: [UMN_MAPSERVER-USERS] WMS client/cascading wms bounding box
problem


Hi,


I am trying to use MapServer as a WMS client to another WMS (cascading WMS).

  The request I make is of the form:
http://localhost/cgi-bin/mapserv_44.exe?map=midas.map&version=1.1.1&request=
getmap&layers=gs_lay&width=500&height=250&srs=epsg:4326&bbox=0,45,40,65&form
at=image/png

However, MapServer seems to do something strange to the bounding box as the 
box that is submitted by MapServer (as part of the getmap request) is the 
following:
0.039999999999997732,45.019999999999996,39.960000000000001,64.98000000000000
4

My map file is set up as follows:

MAP
   STATUS ON
   SIZE 500 250
   EXTENT 0 45 40 65
   SHAPEPATH "./data"
   IMAGECOLOR 0 0 255
   PROJECTION
       "init=EPSG:4326"
   END
     WEB
       IMAGEPATH "/ms4w/tmp/ms_tmp/"
       IMAGEURL "/ms_tmp/"
   END
     OUTPUTFORMAT
       NAME png
       DRIVER "GD/PNG"
       MIMETYPE "image/png"
       IMAGEMODE RGBA
       EXTENSION "png"
   END
     LAYER
       NAME "gs_lay"
       TYPE RASTER
       STATUS ON
       CONNECTION "http://localhost:8080/geoserver/wms?"
       CONNECTIONTYPE WMS
       METADATA
           "wms_srs"             "EPSG:4326"
           "wms_name"            "topp:gfs"
           "wms_server_version"  "1.1.1"
           "wms_format"          "image/png"
           "wms_latlonboundingbox" "0 45 40 65"
       END
   END
END


Does anyone know why the bounding box is being changed, instead of being 
submitted as is?

Many thanks for any help
Robert Jones


Robert William Jones
Software Engineer

ComSine Limited
Telephone:  + 44 (0) 1483 457121
Fax:  + 44 (0) 1483 304836
Mobile: +44 (0) 7939 295868
www.comsine.com

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