find array indices of minimum value in a 2Darray

I have a 2d array with a minimum vakue of 50

How do I find the array indices for this value?

Answer 1

[Walter Roberson]

[r, c] = find(A==min(A, [], 'all');

[Charles Mistretta]

thanks walter that works Chuck

[Walter Roberson]

Note: this was specifically coded to be able to find multiple copies if the min is duplicated. If the min is unique then

[~, linearidx] = min(A(:));
[r,c] = ind2sub(size(A), linearidx);

This takes more lines but less processing time, as it does not need to scan the array twice.

[Charles Mistretta]

can this be extended to find the coordinates of a 3D array

[Walter Roberson]

[~, linearidx] = min(A(:));
[r,c,p] = ind2sub(size(A), linearidx);

[Charles Mistretta]

thanks much i will try this

Answer 2

[Charles Mistretta]

really appreciate Walters response - very helpful