How to get all data from m-function?
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Lev Mihailov
le 10 Juin 2021
Commenté : Stephen23
le 10 Juin 2021
Hello! I created a function for reading dpv files, it contains many parameters that I receive. But in the example of creating a function, there is only one
function A=ReadDPV(fileName) % When reading a file, 102 values come out
A=0.24*c
A1=0.1*f
B=1.2*b
...
Z2=2.4
end
When I try to read with this function, I only get the value A
X=ReadDPV(fileName)
% X=A;
How to get all 102 values that are read and counted in my function?
1 commentaire
Réponse acceptée
Max Heiken
le 10 Juin 2021
Hello! The value A is the only one that gets output because that is what you specified in your function declaration. You could instead specify a list of all outputs:
function [A, A2, B, .., Z2] = ReadDPV(fileName)
...
end
But this has its own drawbacks, because you would also need to accept all those values when you call the function:
[A, A2, B, .., Z2] = ReadDPV(fileName);
A perhaps better solution would be to store all these values in one container. If they are of the same type, a vector would work; if you want to still reference them by their name, a struct comes to mind; otherwise a cell array. An example for the struct approach:
function contents = ReadDPV(fileName)
contents = struct();
contents.A=0.24*c
contents.A1=0.1*f
contents.B=1.2*b
...
contents.Z2=2.4
end
And accessing them:
contents = ReadDPV(fileName);
A = contents.A;
...
0 commentaires
Plus de réponses (1)
Scott MacKenzie
le 10 Juin 2021
Modifié(e) : Scott MacKenzie
le 10 Juin 2021
Your function is defined to only return A (which is perhaps a scalar). To return multiples values, return them as elements in a vector and define your function accordingly:
function [A, A1, B, ... ] = ReadDPV(fileName)
A = ...
A1 = ...
...
end
Then, use your function thus:
[x, y, ...] = ReadDPV(...)
x will be A, y will be A1, and so on
0 commentaires
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!