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Hello!
i want to searcha 4d matrix to find all indeces relative to non yero elements.
<i would like to store those indeces in n times 4 matrix,
where n is the number of points found.
I tried with ind2sub but it was useless.

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Stephen23
Stephen23 2019-11-5
编辑：Stephen23 2019-11-5

0 个投票

"I tried with ind2sub but it was useless."
It worked for me. First lets define some fake data:
>> A = zeros(5,4,3,2);
>> A(5,3,2,1) = 1;
>> A(3,1,1,2) = 1;
then get the indices of non-zero array elements:
>> [R,C,P,Q] = ind2sub(size(A),find(A));
>> M = [R,C,P,Q]
M =
5 3 2 1
3 1 1 2

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