Dynamic call to structure elements
35 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Tom Dollfus
le 8 Juil 2020
Déplacé(e) : Stephen23
le 8 Déc 2023
I intend to use a for loop to process iterative computation on different elements of a structure; my structure is made of:
- MyStruct.Elmt1
- MyStruct.Elmt2
- MyStruct.Elmt3
- ...
How can I dynamicaly call each element of my structure (incrementing the number : Elmt1, Elmt2,...) in order to use it in a for loop?
Thanks
1 commentaire
Stephen23
le 8 Juil 2020
Déplacé(e) : Stephen23
le 8 Déc 2023
You can trivially access the fields of a structure using this syntax, where F is the fieldname:
S.(F)
You could use sprintf to generate the fieldnames, e,g.:
idx = 1;
fnm = sprintf('Elmt%u',idx);
MyStruct.(fnm)
Note that your code would be simpler and more efficient if you used a non-scalar structure, e.g.:
S(1).Elmt = 1;
S(2).Emlt = 22;
S(3).Emlt = 333;
then you can trivially access any element of that structure array using basic, efficeint indexing:
idx = 1;
S(idx).Emlt
Réponse acceptée
Walter Roberson
le 8 Juil 2020
for K = 1 : 3
MyStruct.(sprintf('Elmt%d', K))
end
or
for K = 1 : 3
MyStruct.("Elmt"+K) %rely on string objects
end
0 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Structures 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!