Hello everyone, I am trying to investigate what the shortcomings may be of
using vectors/ rasters in determining attribute data from one program to
another.  My project has entailed overlaying points on different maps
(vector as well as raster based) and then determining attribute data from
each one and comparing them against one another.

What would the limitations be in this process?  From what I understand, one
of the limitations is that there are tolerance limits within the program
which are used to assign points from one pixel to another.  I don't fully
understand this concept-- why would one need a tolerance when determining if
a point is within a square or outside of it?

thank you all for your help!

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