(Originally posted on Doug's MATLAB Video Tutorials blog.)
If you have a vector of coordinate for a set of points, you might want to differentiate those points. To do that a concept called logical indexing will help you pull out a subset of those points easily.
Here is a quick example.
>> L = logical([0 1 0 1]) L = 0 1 0 1 >> a = [1 2 3 4] a = 1 2 3 4 >> a(L) ans = 2 4
Recorded: 16 May 2011
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