[Mapserver-users] WMS layer alignment

[Brian Johnson]

I have a map file that uses a couple of WMS servers to add some nice images 
to my map.  Specifically, I added the Terraserver orthos - and a relatively 
new server from the USGS - color orthos for many urban areas.

My map file, the Terraserver WMS layer, and the shapefiles I am using are in 
NAD83 UTM zone 10N coordinate system.  The USGS WMS layer is in WGS 84. All 
projections are set in the map file, and for each layer.  When I turn on the 
Terraserver layer, the image is nicely displayed behind the shapefiles 
perfectly.  When I turn on the USGS layer, the center of the image is 
perfectly aligned - and the rest of the image appears to be squashed - with 
apparently a larger Y-axis extent that the image should be.  If I change the 
map projection to WGS 84, the the USGS layer now nicely aligns with the 
shapefiles, and so does the Terraserver image - with no reprojection 
problem.

Any suggestions as to where my problem might be?  I'd like to have the map 
in UTM project for how it looks compared to WGS - but I can't figure out why 
the WGS 84 layer is not reprojecting correctly.

Below are the sections from my .map file...

Thanks for any ideas!

Brian

#---Map file projection info---

PROJECTION
"init=epsg:26910"
END


#---Terraserver Layer---
LAYER
   NAME ortho
   METADATA
     "wms_title" "USGS Digital Ortho-Quadrangles"
     "wms_srs"   "EPSG:26910" #NAD83 UTM zone 10N
     LYRNAME "DOQs (orthophotos)"
     LINK 
"http://terraserver.microsoft.com/about.aspx?n=AboutTerraServiceOverview"
   END
   GROUP "BASE DATA"
   STATUS OFF
   TYPE RASTER
   MINSCALE 10
   MAXSCALE 240000
   CONNECTIONTYPE WMS
   CONNECTION 
"http://terraservice.net/ogcmap.ashx?VERSION=1.1.1&SERVICE=wms&LAYERS=DOQ&FORMAT=png&styles="
   PROJECTION
     "init=epsg:26910" #NAD83 UTM zone 10N
   END
END

#---USGS Portland, OR area layer---
LAYER
    NAME Urban133
    METADATA
      "wms_title" "Portland Ortho 2002"
      "wms_extent" "-123.12987 45.241726 -122.3584 45.75648"
      LYRNAME "Urban133"
      LINK "N/A"
    END
    OFFSITE 255 255 255
    GROUP "Urban133"
    STATUS ON
    TYPE RASTER
    CONNECTIONTYPE WMS

    CONNECTION 
"http://gisdata.usgs.net:80/servlet/com.esri.wms.Esrimap?SERVICENAME=133urban&VERSION=1.0.0&REQUEST=map&LAYERS=UA_ORTHO_313_01&STYLES=&FORMAT=JPEG&"

    PROJECTION
    "init=epsg:4326" #WGS 84
    END
END

_________________________________________________________________
Need more e-mail storage? Get 10MB with Hotmail Extra Storage.   
http://join.msn.com/?PAGE=features/es