Question

I have a three-dimensional array, and I’d like to be able to find a specific value and get the three coordinates.

For example, if I have:

A = [2 4 6; 8 10 12]

A(:,:,2) = [5 7 9; 11 13 15]

and I want to find where 7 is, I’d like to get the coordinates i = 1 j = 2 k = 2

I’ve tried variations of find(A == 7), but I haven’t got anywhere yet.

Thanks!

Answer 1

The function you seek is ind2sub:

[i,j,k]=ind2sub(size(A), find(A==7))
i =
     1
j =
     2
k =
     2