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Choosing a coordinate system when data spans coordinate system zones

Question asked by fultzjason on Jul 17, 2015
Latest reply on Jul 20, 2015 by

Hi all,


I'm curious to hear how others choose an appropriate coordinate system when creating a new feature class that has a large spatial extent and spans several zones.  Two scenarios come to mind:


1.  When digitizing polygons that fall in various regions across North America.  Is the correct choice to always choose a geographic coordinate system (such as WGS84) for this scenario?

2.  On a smaller scale, A Feature Class that will span a 10 mile region but spans two different state plane zones or UTM zones.  Is there a best approach for choosing which zone to use?


Any insight would be much appreciated.