3D indices for particular values in a 3D array

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William Sherwin
William Sherwin 2024-4-8
评论： Stephen23 2024-4-9
I want to find the 3D indices for particular values in a 3D array. I was expecting to use something like one would use for a 2D array:
>>[row,col] = find(a==8)
So I tried
>>[row,col,page] = find(a==8)
and
>>[row,col,sheet] = find(a==8)
but these just gave nonsense. Surely there is a way to do this?
W.Sherwin@unsw.edu.au

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Stephen23
Stephen23 2024-4-8
编辑：Stephen23 2024-4-8
Ran in:
Use IND2SUB:
X = randi(9,4,3,2)
X =
X(:,:,1) = 9 4 1 3 1 8 5 3 7 8 8 4 X(:,:,2) = 7 4 7 7 9 3 6 3 9 8 2 7
[R,C,P] = ind2sub(size(X),find(X==8))
R = 4x1
4 4 2 4
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C = 4x1
1 2 3 1
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P = 4x1
1 1 1 2
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