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Area of interest [AOI or ROI] routine

Hello IDL folks,

I would like to find a routine for determining if a point is in a region
of interest.  I realize this functionality exists in the IDL object
graphic routines.  I'll take the time to learn how to use these if I
have to, but would prefer not to :), if someone knows  of a routine I
can use.

Thanks for any help,
Joe Means

Joseph E. Means
Assistant Professor,  joe.means@orst.edu
Department of Forest Science
Oregon State University
Corvallis, OR 97331-5752