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CGVD28 to CGVD2013 Transformation File Format

Question asked by kenbucha on Feb 4, 2019
Latest reply on Feb 7, 2019 by Dan_Patterson

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?