[mapserver-users] WMS Config for ESRI Clients

[Joshua McNary]

I am working with the technical team at SpatialCloud to try to get our image based TMS-to-WMS output working fully (via MapServer/MS4W [http://www.spatialcloud.com/index.cfm?event=home.WMTStoWMS]).  The current iteration will work with some WMS clients, but others, like ESRI ArcGIS Suite, do not work.

This original Mapfile we had will allow it to work with some clients; GetCapabilities works for all clients we have tested:


---Start Mapfile #1---

MAP
    NAME SPATIALCLOUD_WMS
    STATUS ON
    SIZE 800 500
    IMAGETYPE JPEG
    IMAGECOLOR 240 240 240
    EXTENT -20037508.34 -20037508.34 20037508.34 20037508.34
    UNITS METERS
    PROJECTION
        "init=epsg:900913"
    END

    LAYER
        DATA "tmsgdal.xml"
        NAME "SpatialCloudTMS"
#        PROJECTION
#          "proj=merc" "a=6378137" "b=6378137" "lat_ts=0.0" "lon_0=0.0" "x_0=0.0" "y_0=0" "k=1.0" "units=m" "nadgrids=@null" "no_defs"
#        END
        STATUS ON
        TYPE RASTER
        UNITS METERS
    END
	
END

---End Mapfile #1---


But an was error produced in ESRI ArcMap 9.3 when trying to draw the image:


---Start ESRI Error #1---

One or more layers failed to draw:

SPATIALCLOUD_WMS:   WMS service exceptions:-Service Error Code:InvalidSRS
Service Error Description: msWMSLoadGetMapParams(): WMS server error. Invalid SRS given : SRS must be valid for all requested layers.
-Service Error Code:InvalidSRS

---End ESRI Error #1---


We realized the Mapfile was malformed and we had an SRS issue so we created this variation which seemed to be more to spec:


---Start Mapfile #2---

MAP
  NAME SpatialCloud
  STATUS ON
  SIZE 512 512
  IMAGETYPE PNG24
  OUTPUTFORMAT
   NAME PNG24
   DRIVER "GD/PNG"
   MIMETYPE "image/png"
   EXTENSION PNG
   IMAGEMODE RGB
   TRANSPARENT ON
  END    
  IMAGECOLOR 240 240 240
  EXTENT -180.00 -90.00 180.00 90.00
  # EXTENT -20037508.34 -20037508.34 20037508.34 20037508.34
  UNITS DD
  PROJECTION
      "init=epsg:4326"
  END

WEB
    METADATA
            "wms_title"           "SpatialCloud TMS via WMS"
            "wms_onlineresource"  "http://localhost/cgi-bin/mapserv.exe?map=c:/ms4w/Apache/htdocs/sccustomserver/tms.map"
            "wms_srs"             "EPSG:4326"
            "wms_format"          "image/png"
            "wms_server_version"  "1.1.1" 
    END
END
    
LAYER
        DATA "tmsgdal.xml"
        NAME "SpatialCloudWMS" 
	METADATA
	"wms_title"  "Put your layer title here"
	"wms_extent" "-20037508.34 -20037508.34 20037508.34 20037508.34"
	"wms_srs"             "EPSG:900913"
	END
  	PROJECTION
          "init=EPSG:900913"
  	END
  	
        STATUS ON
        TYPE RASTER
        UNITS METERS
    END
	
END

---End Mapfile #2---


GetCapabilities continued to works for all clients, but this led to our test WMS clients ceasing to draw and a new error in ESRI software:


---Start ESRI Error #2---

One or more layers failed to draw:

SpatialCloud TMS via WMS:   WMS service exceptions:Service Error Description: msDrawMap(): Image handling error. Failed to draw layer named
Service Error Description: '
Service Error Description: SpatialCloudWMS
Service Error Description: '
Service Error Description: .
IReadBlock failed at X offset 98, Y offset 98: Unable to access file. GDALDatasetRasterIO() failed: drawGDAL()

---End ESRI Error #2---


We have tried variations on both of these Mapfiles, focusing on the projections.  We have never been able to get our WMS feed to draw in ESRI software, but can do so with other (OS) clients.  

Can anyone provide any suggestions?  Assistance?  Comment?  

Thank you.


Joshua McNary
Marketing Manager
jmcnary at spatialcloud.com
SpatialCloud.com



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