The asc files mentioned in that changeset are basically the "source code" of the coordinate system definitions which need to be "compiled" to their binary .csd equivalents using the CS_Comp.exe compiler tool. This tool is not bundled with MGOS, so you have to build the tool and dictionaries yourself from source.
If you have access to the MSVC compiler (you can use the free Visual Studio 2015 community edition, or VS2017 community edition with C++ workloads and VC140 toolset installed) Checkout a copy MGOS 3.1 (branches/3.1/MgDev) with Subversion Go to MgDev\Oem\CsMap\Dictionaries and make the required changes to coordsys.asc and ellipsoid.asc coordsys.asc: https://trac.osgeo.org/csmap/changeset/2753/trunk/CsMapDev/Dictionaries/coordsys.asc ellipsoid.asc: https://trac.osgeo.org/csmap/changeset/2753/trunk/CsMapDev/Dictionaries/elipsoid.asc Go to MgDev\Oem\CsMap\VC140 and open OpenSource.sln in Visual Studio. Build the solution, which will build and run the compiler that should then generate updated Coordsys.CSD and Ellipsoid.CSD files in MgDev\Oem\CsMap\Dictionaries Copy these updated files over to the CS-Map dictionaries dir of your MGOS install and overwrite the existing files. Then restart your MapGuide Server and it should pick up the updated WGS84.PseudoMercator definition. Hope that helps. - Jackie -- Sent from: http://osgeo-org.1560.x6.nabble.com/MapGuide-Users-f4182607.html _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapguide-users