Which row has the minimum non zero element?

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Giannakis Stoukas
Giannakis Stoukas le 21 Mar 2015
Commenté : Star Strider le 21 Mar 2015
Hello i have a matrix and i want to find which is the row with minimum nonzeros elements.I dont want the number of non zeros,but i want to know which is the row.

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Star Strider
Star Strider le 21 Mar 2015
I’m not certain what you mean by ‘minimum nonzeros elements’. This takes the row sum of the rows with nonzero elements and finds the row with the smallest row sum:
M = randi(51, 20, 5)-1;
[r0,~] = find(M == 0);
Mnz = M(setdiff([1:size(M,1)],r0),:);
[Mu, ix] = sort(sum(M,2));
Row_min_nz = is(x); % Row With Minimum Row Sum
  2 commentaires
Giannakis Stoukas
Giannakis Stoukas le 21 Mar 2015
Ι forgot to write the word sum.Thank you
Star Strider
Star Strider le 21 Mar 2015
My pleasure!

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Plus de réponses (2)

Jan
Jan le 21 Mar 2015
M = randi(5, 6, 6) - 1;
[V, Index] = min(sum(M == 0, 2));

Konstantinos Sofos
Konstantinos Sofos le 21 Mar 2015
a = [2,2,3;0,2,5;1 2 3]
[row,column]=find(a==min(min(a(a>0))))

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