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Display XY Data not honoring coordinate system of input coordinate system?

Question asked by sluggo62 on Feb 10, 2015
Latest reply on Feb 13, 2017 by MKennedy-esristaff

Display XY Data not honoring coordinate system of input coordinate system - I have tabular data with lat lon columns in an unknown geographic coordinate system I need to bring into ArcMap and compare to a feature class with a known coordinate system.  I used Display XY Data three different times, each time specifying a different geographic coordinate system (NAD27, NAD83, and WGS84) for the input data.  I exported each to a new feature class and displayed them all on a map.  I expected there would be a difference in the point locations between the NAD27 and the NAD83 points, but all 3 essentially fell on top of each other.  Is there something I don't understand about the Display XY Data functionality, or is it not honoring the specification of input data coordinate systems, or what??

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