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finding min matrix and where that is

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bachelor student
bachelor student le 10 Août 2016
Commenté : Star Strider le 10 Août 2016
Hi all I have a matrix, I want to find its minimum and where that minimum is, can anybody help me with that?

Réponses (1)

Star Strider
Star Strider le 10 Août 2016
This works to find the first minimum:
M = randi(9, 5); % Create Matrix
[Mmin,lidx] = min(M(:));
[r,c] = ind2sub(size(M),lidx);
Result = [Mmin r c]
If there are mor than one values of the minimum:
M = randi(9, 5); % Create Matrix
Mmin = min(M(:))
[r,c] = find(M == Mmin)
  3 commentaires
bachelor student
bachelor student le 10 Août 2016
there is just one problem, i want to find the min, except for the zero values
Star Strider
Star Strider le 10 Août 2016
My pleasure.
To get the minimum value and locations for all values not equal to zero, this works:
M = randi([0 5], 5); % Create Matrix
Mmin = min(M(M(:) ~= 0))
[r,c] = find(M == Mmin)
(This also allows for negative values in the matrix if necessary, even though the test matrix values go from 0 to 5 here.)

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