Return logical for rows of non-zero numbers for specified columns (similar to "all" function)
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi. I need to calculate a logical from a 1x3 matrix (although the number of columns is irrelevant) that tells me if non-zero numbers are in specified columns.
For example, if I have the following matrix callled mat:
4 16 2
6 7 7
1 4 8
0 5 19
3 0 5
9 0 16
x = all(mat,2)
x here would return a logical array where each row equaling "1" will have ALL non-zero numbers. In mat, this would only be the first 3 rows, and thus x = [1 1 1 0 0 0];
My question is whether there is an easy line of code or existing function that would allow me to specifiy which columns I would like to be non-zero in order for the logical to spit out a ero. For example, if I wanted all rows where columns 1 and 3 are non-zero, the logical that is returned should be something like this: x = [0 0 0 0 1 1] since only the last two rows fit that criteria.
Or if I wanted all rows where columns 2 and 3 were non-zero, it should return x = [0 0 0 1 0 0]
Thanks in advance!
1 commentaire
Matt J
le 10 Août 2021
For example, if I wanted all rows where columns 1 and 3 are non-zero, the logical that is returned should be something like this: x = [0 0 0 0 1 1] since only the last two rows fit that criteria.
Why don't the first 3 rows fit the criteria? Shouldn't the result be x = [1,1,1 0 1 1]
Réponse acceptée
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Data Type Identification 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!