How to get all data from m-function?

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?

[Stephen23]

Best solution: use a structure.

Answer 1

[Max Heiken]

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;
...

Answer 2

[Scott MacKenzie]

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