Naming variables according to the values of another variable

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Mia Dier
Mia Dier on 25 May 2021
Edited: Jan on 25 May 2021
I have a variable
A=[1;2;5]
and I want to use the values of this variable in the name of the new variables I'm going to create: B_1, B_2 and B_5.
for k=A(1,1):A(3:1)
B_'k'= TreeBagger(.)
end
This code, however, doesn't work and I couldn't come up with a solution.
  1 Comment
Stephen23
Stephen23 on 25 May 2021
Formcing meta-data into variable names is one way that beginners force themselves into writing slow, inefficient, complex code that is difficult to debug. Read this to know some of the reasons why:
You should store (meta-)data in variables (not in variable names) and use basic indexing, just like MATLAB was designed for.

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Accepted Answer

Jan
Jan on 25 May 2021
Edited: Jan on 25 May 2021
Don't do this. Hiding indices in the names of variables is a bad programming pattern, which is avoided consequently by experienced programmers. See https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
Use array and indices or a struct instead.
for k = 1:3
B(k).index = A(k);
B(k).data = TreeBagger(.)
end
By the way, A(1,1):A(3:1) might not do, what you expect. The 2nd argument is an empty vector. Maybe you mean:
for k = A.'

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