How can I extract exact values from a single column of a matrix?
18 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Sam Hurrell
le 5 Juil 2021
Réponse apportée : Star Strider
le 5 Juil 2021
The matrix in question has x, y, z coordinates in its first 3 columns respectively. I tried using a for-loop to go through the matrix and if it came across a row where x=0.025 then it would copy the entire row to a second matrix in it's 'f' row then f=f+1. The second matrix was premade with zeros and is the correct size, however it keeps resulting in no change to it.
0 commentaires
Réponse acceptée
Star Strider
le 5 Juil 2021
Try something like this —
M = randi(50, 50, 3)/1000 % Original Matrix
Lv = M(:,1) == 0.025 % Logical Vector 'Mask'
nrtrue = nnz(Lv) % Number Of Occurrences (Optional)
N = M(Lv,:) % New Matrix
Make appropriate changes to get the result you want.
.
0 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Logical 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!