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Buffer within a line or polygon

Question asked by CGrantham on Apr 13, 2015
Latest reply on Apr 14, 2015 by CGrantham

I have read that to create a buffer within a line or polygon, use a negative number for the unit (e.g. -100 meters).  However, in ArcMap 10.2 this is not allowed or in my experience it creates an error.  I have a an area either polygon or polyline (I have created both to attempt the buffer) that I would like to have a 100 meter buffer within the boundary ONLY.  When I create the buffer from the line example, it is 100 meters on each side (inside the line and outside the line; I only want inside) and when I create the buffer from the polygon example it buffers everything within the feature. Suggestions?  I apologize if this has been mentioned before, I did not find it while searching for an answer.

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