MATLAB: How to find the value in a column that’s most close to a specific number

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Without writing a loop, is there an easy way to find out the number in a column that's most close to a specific number?

For example, I have a column data A = [1;2;3;4;5;6;7]; It is always ranked in the order of small to large. Now I have a number 2.7. How do I find the index of the values in A that is most close to 2.7? We know in this case the answer should be A(3,1)=3. So how do I find the index "3" without writing a loop?

Best Answer

A = [1;2;3;4;5;6;7]
b=2.7
[~,idx]=min(abs(A-b))

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combvec() from the Deep learning toolbox is most easiest solution

a = [1 2 3]
b = [1 2 3]
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The other solution is to use ndgrid()

a = [1 2 3]
b = [1 2 3]
[A, B] = ndgrid(a, b);
C = [B(:) A(:)]

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out=stream(randi(length(stream)));

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