how to find the row index of specific vector in a matrix
102 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi everyone, suppose there's a marix [2 0;-2 1;2 3], I want find the row index of [-2 1], i.e., [-2 1] is on the second row of [2 0;-2 1;2 3]. how to realize it in matlab? Many thanks!
0 commentaires
Réponse acceptée
Star Strider
le 7 Avr 2019
Try this:
A = [2 0;-2 1;2 3];
RowIdx = find(ismember(A, [-2 1],'rows'))
producing:
RowIdx =
2
2 commentaires
Elizabeth Thompson
le 11 Mar 2022
How would I do this if the vector I am looking for is a subset of A? i.e. If A is a matrix with three columns, and I want to find which row a 1x2 array x is in of A? idx=find(ismember(A,x,'rows')) obviously wouldn't work here, but is there a way to do this still using the find(ismember()) command?
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Characters and Strings 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!