Effacer les filtres
Effacer les filtres

Add two binary matrices and get only "1" in each row

3 vues (au cours des 30 derniers jours)
Ideth Kara
Ideth Kara le 22 Sep 2020
Commenté : Image Analyst le 22 Sep 2020
Hello eveyone!
I have two binary matrices(m*n),i want to add those two matrices but in order to get only '1' in each row .
this is the output matrix ,for example in row (2,5,6 and 7) i have two '1' ,there is any solution to eliminate one of them ?
0 0 0 0 0
0 0 1 1 0
0 0 0 1 0
0 0 0 0 0
0 0 1 0 1
0 1 0 0 1
1 1 0 0 0
1 0 0 0 0
0 0 0 0 0
0 0 0 0 0
Would you please help me ?
  1 commentaire
Image Analyst
Image Analyst le 22 Sep 2020
For the case (like rows 2 and 7) where the binary/logical matrices have 1's in different columns, which of the two 1's do you want to keep?
And are your matrices of class logical? Or class double? Or some integer class? It makes a difference!!!

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Réponse acceptée

Ameer Hamza
Ameer Hamza le 22 Sep 2020
Modifié(e) : Ameer Hamza le 22 Sep 2020
This is one way
M = [ ...
0 0 0 0 0
0 0 1 1 0
0 0 0 1 0
0 0 0 0 0
0 0 1 0 1
0 1 0 0 1
1 1 0 0 0
1 0 0 0 0
0 0 0 0 0
0 0 0 0 0];
M_out = M*0;
[v, c] = max(M, [], 2);
idx = sub2ind(size(M), find(v), c(v==1));
M_out(idx) = 1;
Result
>> M_out
M_out =
0 0 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 0
0 0 1 0 0
0 1 0 0 0
1 0 0 0 0
1 0 0 0 0
0 0 0 0 0
0 0 0 0 0
  2 commentaires
Ideth Kara
Ideth Kara le 22 Sep 2020
Great! thank you so much
Ameer Hamza
Ameer Hamza le 22 Sep 2020
I am glad to be of help!

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