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IDLgrWindow Pickdata on an IDLexObjView Obect.

Does anyone have any suggestions on how to get the correct 3-D position
using the Pickdata method for an IDLgrWindow object which is displaying an
IDLexObjView.  Pickdata correctly finds the objects but returns incorrect
x,y,z values.  I am trying to modify xplot3d.pro to return the x,y, and z
coordinates of a IDLgrPolyline displayed using Orbs for each datapoint.

Don Lindler