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CGVD28 to CGVD2013 Transformation File Format

Question asked by kenbucha on Feb 4, 2019
Latest reply on Aug 26, 2020 by snorth

I'd like to be able to convert between two Canadian vertical coordinate systems: CGVD28 and CGVD2013.  The staff at Natural Resources Canada have a conversion grid which is in ".byn" format (Canadian Geodetic Survey binary geoid file), but have offered to convert to another format if ArcGIS can't read/use it.  I don't have a handle on the different methods & formats supported, and which would be most appropriate.  Melita Kennedy, what can I tell them?  Or - is this file something ESRI already has in hand?