How do I find multiple columns greater than a single column in MATLAB?

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I have a single column vector that is an average of the other multiple columns (in a vector). I wish to index when each element of the matrix is is greater than the average vector. I am able to do this one at a time with:

idx = y1<y2

however if y2 is a matrix it comes up with an error. My current solution to over come this is:

y1 = [y1;y1]

but this is rather inelegant and doesn't account for y2's of unknown sizes. Regards

asked 38 secs ago

josh

74

How do I find multiple columns greater than a single column in MATLAB?