[mapguide-users] MapGuide Open 1.0.1 and WMS problems

[Thomas M. Tuerke]

Hmmm… it looks like something in the underlying CS tools is failing to do the transformation from the EPSG to WKT.

 

In the meantime, you might try to put an explicit override into the SRS.WKT.Map definition, found in the OgcWmsService.config.awd file.  This trumps anything the libraries may try to do.  Add a <translate> element mapping EPSG 4326 to the correct WKT, a la:

 

<Define item=”SRS.WKT.map”>

  <translate from=”EPSG:4326”>wkt-string-here</translate>

  :

  :

</Define>

 

where “wkt-string-here”  is the WKT associated with EPSG:4326.  (There should already be an example mapping in there for reference.)  Not having the tables in front of me at the moment, I did a quick search on the web to pull up these candidates (pick one,) but please verify that the numbers are in order.  A cursory glance suggests that they are, but caveat user…

 

- Thomas

 

GEOGCS["WGS 84",

    DATUM["WGS_1984",

        SPHEROID["WGS 84",6378137,298.257223563,

            AUTHORITY["EPSG","7030"]],

        TOWGS84[0,0,0,0,0,0,0],

        AUTHORITY["EPSG","6326"]],

    PRIMEM["Greenwich",0,

        AUTHORITY["EPSG","8901"]],

    UNIT["degree",0.0174532925199433,

        AUTHORITY["EPSG","9108"]],

    AXIS["Lat",NORTH],

    AXIS["Long",EAST],

    AUTHORITY["EPSG","4326"]]

 

 

GEOGCS["WGS 84",

    DATUM["WGS_1984",

        SPHEROID["WGS 84",6378137,298.257223563,

            AUTHORITY["EPSG","7030"]],

        AUTHORITY["EPSG","6326"]],

    PRIMEM["Greenwich",0,

        AUTHORITY["EPSG","8901"]],

    UNIT["degree",0.01745329251994328,

        AUTHORITY["EPSG","9122"]],

    AUTHORITY["EPSG","4326"]]

 

 

GEOGCS["WGS 84",

    DATUM["WGS_1984",

        SPHEROID["WGS 84",6378137,298.257223563,

            AUTHORITY["EPSG",7030]],

        TOWGS84[0,0,0,0,0,0,0],

        AUTHORITY["EPSG",6326]],

    PRIMEM["Greenwich",0,AUTHORITY["EPSG",8901]],

    UNIT["DMSH",0.0174532925199433,AUTHORITY["EPSG",9108]],

    AXIS["Lat",NORTH],

    AXIS["Long",EAST],

    AUTHORITY["EPSG",4326]]

 

 

  _____  

From: Andy Morsell [mailto:amorsell at spatialgis.com] 
Sent: Monday, July 31, 2006 11:11 AM
To: users at mapguide.osgeo.org
Subject: RE: [mapguide-users] MapGuide Open 1.0.1 and WMS problems

 

Thomas,

I did have it that way for one layer and with proper case on another.  After making sure they are all consistent, I still get the same error message.

 

Here is the result of WMS GetCapabillities for one of the layers in question:

 

<!--  Published Layer #2   --> 

- <http://mapguide.spatialgis.com/mapguide/mapagent/mapagent.fcgi?REQUEST=GetCapabilities&SERVICE=WMS&FORMAT=text/xml>  <Layer queryable="0" cascaded="0" noSubsets="0" opaque="0">

  <Name>Samples/Sheboygan/Layers/Hydrography</Name> 

  <Title>Hydrography</Title> 

  <SRS>EPSG:4326</SRS> 

  <LatLonBoundingBox minx="-180" miny="-90" maxx="180" maxy="90" /> 

  <BoundingBox SRS="EPSG:4326" minx="-180" miny="-90" maxx="180" maxy="90" /> 

  </Layer>

 

And I am trying to test it via: 

 

http://mapguide.spatialgis.com/mapguide/mapagent/mapagent.fcgi?request=GetMap&service=WMS&layers=Samples/Sheboygan/Layers/Hydrography&srs=EPSG:4326&bbox=-87.74,43.68,-87.69,43.815&width=500&height=500&format=image/png

 

Andy 

  _____  

From: Thomas M. Tuerke [mailto:thomas.m.tuerke at autodesk.com] 
Sent: Monday, July 31, 2006 10:53 AM
To: users at mapguide.osgeo.org
Subject: RE: [mapguide-users] MapGuide Open 1.0.1 and WMS problems

Just an FYI: XML is case sensitive, so unless your example is capitalized for emphasis, I’d recommend trying <Bounds … /> instead.

 

- Thomas

  _____  

From: Andy Morsell [mailto:amorsell at spatialgis.com] 
Sent: Sunday, July 30, 2006 4:54 PM
To: users at mapguide.osgeo.org
Subject: [mapguide-users] MapGuide Open 1.0.1 and WMS problems

 

Hi, 
I am having some problems publishing layers via WMS after upgrading to MapGuide Open 1.0.1.  This problem is similar to those I had recently when I installed MapGuide Enterprise.  When I issue a WMS request to a given layer, I get the following error returned:

<ServiceExceptionReport version="1.1.1"> 
 <ServiceException code="InternalError"> 
  The coordinate system conversion failed. 
Unsupported coordinate system code.<details>The coordinate system conversion failed. 
Unsupported coordinate system code. 
Exception occurred in method MgCoordinateSystem.ConvertCoordinateSystemCodeToWkt at line 950 in file c:\build_tux_area\mgdev_opensource\common\service\coordinatesystem\CoordinateSystem.cpp

</details> 
 </ServiceException> 
</ServiceExceptionReport> 

As I had to do with MapGuide Enterprise, I added <BOUNDS SRS="EPSG:4326" west="-180" south="-90" east="180" north="90" /> to the WMS Bounds parameter for the layer, but I still continue to get this error. 

Any help is appreciated. 

Andy Morsell, P.E. 
Spatial Integrators, Inc. 
http://www.SpatialGIS.com <http://www.SpatialGIS.com>  

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