How to remove zeros from a 3D array

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Burak
Burak 2017-3-30
评论： Burak 2017-3-30
Hi everyone, I have a 3D array like this A(v,n,m) , I need to remove zero columns and and rows from first 2 dimens
for m=1:N
A(~any(A,2),:,m)=[];
A(:,~any(A,1),:m)=[];
end
I tried this code but I got error. If anyone can help me, appreciated.
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Geoff Hayes
Geoff Hayes 2017-3-30
Burak - are you trying to remove all columns or rows that are all zeros or at least one zero in that row or column? If there is a row to be removed at A(1,:,1) do you remove this row from A(1,:,k) for all k?
Burak
Burak 2017-3-30
编辑：Burak 2017-3-30
@KSSV yes, dimensions change and it is ok, I need to get inverse of A for all m but there are zeros and it can't be inversed.
@Geoff I need to remove all rows for A(1,:,k), A(2,:,k) ,...,A(n,:,N) etc.
By the way, thank you both for your interest.

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回答（1 个）

Guillaume
Guillaume 2017-3-30
Well, you cannot remove a row of column from one page but not the other pages, so the loop does not make much sense.
You could do this:
A(any(~any(A, 2), 3)) = []; %remove row from all pages when one row in any of the pages has a 0
A(any(~any(A, 1), 3)) = []; %remove column from all pages when one column in any of the pages has a 0
if that is appropriate for you.
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Burak
Burak 2017-3-30
I will try this, thank you for your interest.
Burak
Burak 2017-3-30
it didn't work , because A's size change when we remove zeros.

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