assigning file from the struct

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Turbulence Analysis
Turbulence Analysis 2022-12-14
编辑： Stephen23 2022-12-14
Hi,
I am looking for a some help in reading the file from teh sturct.
Fo example, I have sturct files named 'A' , 'B' , 'C' ,'D' etc. and inside each struct file I have many arrays stored (e.g. X, Y, Z,) inside teh struct file A.
Now, to call array 'X' from the each struct file I am using A.X; B.X; C.X; D.X. Though this is working fine and in my code everytime I have to change X and Y manually wherever thats been called. Is there any aletrnative way, essentially I am looking for something like
S = X;
A.S
B.S
C.S
D.S
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Stephen23
Stephen23 2022-12-14
编辑：Stephen23 2022-12-14
"I have sturct files named 'A' , 'B' , 'C' ,'D' etc."
A file is some data saved on a storage device (e.g. hard-drive): https://en.wikipedia.org/wiki/Computer_file
A structure is a data class used in MATLAB memory: https://www.mathworks.com/help/matlab/structures.html
What is a "struct file" ? I have never heard of such a thing, nor is it clear how such a thing would even exist, or be used.

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Jan
Jan 2022-12-14
S = 'X';
A.(S)
B.(S)
C.(S)
D.(S)
This is called "dynamic field names".
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Stephen23
Stephen23 2022-12-14
编辑：Stephen23 2022-12-14
"e.g if I have number 60 stored in some variable C, is it possible to use like this"
It is certainly possible, if you want to force yourself into writing slow, complex, inefficient, obfuscated, insecure, buggy code that is hard to debug:
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
Best avoided.
Use indexing, just like MATLAB is designed for.
Jan
Jan 2022-12-14
@Turbulence Analysis: Stephen23 hits the point. Read and consider the linked tutorial carefully.
T3 = A_60.X2 looks like you have hidden the indices 3, 60 and 2 in the names of the variables or fields. This makes it much harder to access the fields, while using real indices is trivial:
T(3) = A(60).X(2)

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