[mapguide-users] Fusion and Open layers Coordinate systems

Mike Adair madair at dmsolutions.ca
Tue Oct 20 02:17:18 EDT 2009

Did you include the definition string for your projection?
That has to be defined somewhere, either with a <script> tag or just in 
your JS code.

I'm not sure about your second question.


Flipper wrote:
> Mike and DM guys,
> I got Mapguide to return an EPSG Code from several maps using
> ConvertWkttoEPSG code in Mapguide 2.1...Next step is to have open layers Do
> transformation...
> My example is Wisconsin Stateplane South nad 27 ft...or EPSG:32054...
> In open layers I have done the following...
> var google = new OpenLayers.Projection("EPSG:900913"), 
> JAXCC = new OpenLayers.Projection("EPSG:32054"), 
> latlon = new OpenLayers.Projection("EPSG:4326");; 
> var extent = new OpenLayers.Bounds(2479000,480000,2496000,501000);
> var newextent = extent.transform(JAXCC, latlon);
> The extent is the WI-S Extent...New Extent should come through with lat and
> lon...but it just returns the same points again...Now if I change extents to
> 10,10,20,20 and change my transform to latlon,google I get changed
> results...What gives does open layers only do transforms on those two
> systems? Am i missing some master file with all the EPSG coordinate systems
> in it?
> Also...Do you know if all Mapguide layers have to be projected onto google,
> or can google/bing/yahoo layers be projected into the mapguide maps local
> coordinate system?

   Michael Adair
   Senior Software Architect
   DM Solutions Group Inc.

   Office: (613) 565-5056 x26
   madair at dmsolutions.ca

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