How to compare matrix of different dimensions?

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Anonymous Matrix 2017-2-22

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https://ww2.mathworks.cn/matlabcentral/answers/326413-how-to-compare-matrix-of-different-dimensions

评论： Jan 2017-2-23

I've read the other posts regarding this problem and I'm kinda confused on how to compare 2 matrices of different dimensions. Say I have this code where the array ww is a 43x1 and the array w3 ended up being 20x1

ww=mean(array1,2)
w1=mean(array2,2)
w2=mean(array2,2)>5
w3=w1(w2)
w5=ww<w3

How can get the statement w5=ww<w3 to work (ie. compare those arrays)?

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Beder 2017-2-23

编辑：Beder 2017-2-23

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I assume you want to have w3 containing the elements where the mean of array2 is >5. To achieve this you can use logical indexing:

w2(w1>5)=w1;
w5=ww<w2

is that what you wanted?

Jan 2017-2-23

If the array has the size [43 x 1], the command mean(array, 2) does not do anything. Please give a small example with example data to explain, what you want to calculate. Seeing not working code is not enough to reconsider your intention.

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