Add field to input struct array in Mex
9 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Dear All,
I would like to add and populate a new field in an existing struct array.
(Context: I just want to distribute the columns of a matrix into the struct array as vectors, but am seeing performance issues with the usual num2cell -> deal approach)
I had thought to try this in a Mex file, but didn't find any documentation/examples for .c, rather just warnings about input structure/cell arrays being read-only.
Is there a way to do this in a C-based Mex file? Or in a C++-based one? I would prefer to generate the field inside the Mex function, but I guess adding a placeholder for the field in an intermediate m-file function would also be fine.
Regards, MT
1 commentaire
James Tursa
le 28 Mar 2023
Modifié(e) : James Tursa
le 4 Avr 2023
Please post a small example showing all inputs and desired output. I should warn you, however, that there is no official way to do this efficiently in a mex routine. To do it efficiently in a mex routine requires unofficial hacking into the mxArray structure to create reference copies. Doable, but probably not what you wanted.
Réponses (1)
Swaraj
le 4 Avr 2023
In order to add a new field to the struct Array in Mex, you can use “mxAddField” function.
Please go through the following documentation for further details.
0 commentaires
Voir également
Catégories
En savoir plus sur Write C Functions Callable from MATLAB (MEX Files) 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!