Compare two arrays of different length
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Joe Abraham
on 18 Dec 2012
Answered: kate hughes
on 21 Oct 2014
I have two arrays. Lets say A = [1 5 7 10 14 17 19 22 25 26 29], B= [2 7 12 18 23 ] I want to find out the values / positions in A which are nearest to every value of B.
P.S : The resulting array should have the same length as B. Any suggestions are welcome.
Thanks
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Accepted Answer
Walter Roberson
on 18 Dec 2012
[junk, Aidx] = min(abs(bsxfun(@minus,A.',B)));
3 Comments
Jan
on 18 Dec 2012
@Joe: Simply try it by splitting into parts:
A
C1 = A.'
C2 = bsxfun(@mtimes, C1, B)
C3 = abs(C2)
[C4, C5] = min(C3)
Look in the documentation for each command:
help transpose
help bsxfun
help mtimes
help abs
help min
Or read the more exhaustive documentation by replacing "help" with "doc".
More Answers (1)
kate hughes
on 21 Oct 2014
Just to be clear this doesn't work on matrices or arrays of different size, does anyone know what does?
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