Create a structure of a field in the workspace

Hello,

I am trying to create a structure of all variables in the workspace that includes a field value of those variables.

For example, I have variables A, B, C, and I want to have:

A.Value = A;
B.Value= B;
C.Value= C;

I did this for all 200 variables in myworkspace and I am getting the error below:

Unable to perform assignment because dot indexing is not supported for variables of this type.

Can you please advice if there's more efficient way? Thanks in advance

[KSSV]

Show us your code with values. Lets check the code. By the what is the necessity to do it?

[Samy Alkhayat]

A = 3; B = 4, C = 5;
A.Value = A; B.Value = B, C.Value = C;
Unable to perform assignment because dot indexing is not supported for variables of this
type.

[KSSV]

What is the requirement for this?

[Stephen23]

"I am trying to create a structure of all variables in the workspace that includes a field value of those variables."

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

If you want one structure, why are you creating three separate structures in your example?

[Samy Alkhayat]

@Stephen23 the reason is to align with a Simulink model that all parameters are structured like in " A.Value "

So I need to use a structure of each field in my workspace to be .Value

Answer 1

[Dyuman Joshi]

You are overwriting numeric values (double precision) with struct values. That is not allowed and hence the error.

If all your variables are individually defined, then you will have to assign them manually. If they were in a matrix, we could have used for loop.

Assigning them to a single structure -

A=3;B=4;C=5;
str(1).Value=A;
str(2).Value=B;
str(3).Value=C;
...
val=[str(1:3).Value]

val = 1×3

3 4 5

Answer 2

[KSSV]

You can save them into a matfile and access, as you like.

A = 1 ;
B = 2; 
C = 3 ; 
save Test.mat ; 

S = matfile('Test.mat') ;
S.A
S.B
S.C