How can you extract multiple fields of a structure matching the same logical index condition?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Matthew Lawrence
le 8 Mar 2017
Réponse apportée : Walter Roberson
le 8 Mar 2017
Let's say I have a structure point with fields x, y and z. I would like to create a structure subpoint which matches point.z>minz.
I can do: subpoint.x=point.x(point.z>minz); subpoint.y=point.y(point.z>minz); subpoint.z=point.z(point.z>minz);
but I was wondering if there was a way of using logical indexing to all fields implicitly (subpoint=point(point.z>minz) doesn't work).
The reason I'm asking is that in my actual example I have a lot of fields and extracting each one individually is taking a bit of time so I was hoping that a single line equivalent, if it exists, might make things go faster.
Thanks,
Matthew
0 commentaires
Réponse acceptée
Walter Roberson
le 8 Mar 2017
mask = point.z>minz;
subpoint = structfun(@(F) F(mask), point, 'uniform', 0)
0 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Multidimensional Arrays 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!