export specific information of a matrix into a new matrix in desired format
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Homayoon
le 22 Juin 2015
Commenté : Star Strider
le 22 Juin 2015
Dear All, I have a matrix in the following form:
1 0 0 1
2 1 0 0
3 0 0 0
4 0 0 0
5 1 0 0
the matrix is huge but has only four columns. What I basically need to have is a code to focus on the second column of the matrix and whenever the element on the second column is equal to 1, the associated row corresponding to that element will be reported in a different matrix. For the above example, the desired output must be:
2 1 0 0
5 1 0 0
I tried to write a code using [counts, bins]=hist, but it failed. I am so thankful of your kindness. All the best, HRJ
0 commentaires
Réponse acceptée
Star Strider
le 22 Juin 2015
This works:
A = [1 0 0 1
2 1 0 0
3 0 0 0
4 0 0 0
5 1 0 0];
B = A(A(:,2) == 1, :)
where ‘B’ is the output matrix.
2 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Shifting and Sorting Matrices dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!