remove values of a matrix from another

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James
James 2014-5-6
回答： José-Luis 2014-5-6
Hi,
I have 2 matrices that are just lists of numbers. Matrix "A" is 380x1 and Matrix "B" is 230x1. I am trying to remove all of the numbers that are in "B" from "A". All of the numbers that are in B are in A so that should not be a problem. I have been trying to use
A(B)=[];
That is giving me the error "Index of element to remove exceeds matrix dimensions." I don't understand this since B is smaller than A.
Are there any other ways to do this?
Thanks in advance.

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采纳的回答

José-Luis
José-Luis 2014-5-6
A = A(~ismember(A,B))

更多回答（1 个）

Sara
Sara 2014-5-6
If A and B are 1D arrays:
for i = 1:numel(B)
A(A==B(i)) = [];
end

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