Projecting Bing Maps and Ordnance Survey Data in ArcGIS Server

(Using ArcGIS Server 9.3.1.)

Creating an mxd in ArcMap with some Mastermap data and then publish this with a Bing Maps Layer in AGS Manager will cause the Mastermap data to not line up with the imagery.

  • Bing Maps service is served up in projection system – WGS 1984 Web Mercator.
  • MasterMap is in British National Grid coordinate system.

One way of definitely getting the data to line up is to use the Project tool in ArcToolbox.  This will change the actual coordinates of the data to “transform” from OS Grid to WGS84 coordinates.  You may find however that this is creates a lot of overhead to keep updating your datasets to WGS84 – especially if they are dynamic layers rather than static background mapping.

I am still researching a better way to try to solve this problem.

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Projecting Bing Maps and Ordnance Survey Data in ArcGIS Server

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