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transformation between WGS 84 Web Mercator / WGS84 Web Mercator (Auxiliary Sphere) and WGS 84 (ellipsoid)

Question asked by hlzhang525 on May 17, 2015
Latest reply on May 18, 2015 by hlzhang525

Team,

 

You may already read the articles on WGS 84 Web Mercator / WGS84 Web Mercator (Auxiliary Sphere) and WGS 84 (ellipsoid). For example,

 

  1. The Google Maps / Bing Maps Spherical Mercator Projection | Alastair Aitchison
  2. http://blogs.esri.com/esri/arcgis/2010/03/05/measuring-distances-and-areas-when-your-map-uses-the-mercator-projection/

 

In practice, how do you deal with the datum/projection transformation between WGS 84 Web Mercator / WGS84 Web Sphere Mercator  and WGS 84 (ellipsoid). Also, how to transfer major local datum /projection like WKID 102204 (Ain_el_Abd_1970_Aramco_Lambert_2 ) into WGS 84 Web Mercator / WGS84 Web Sphere Mercator  'properly'?

 

Any advice?

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