adding variable in the name of table for while loop

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Sunghwan Kim
Sunghwan Kim el 29 de Jun. de 2022
Comentada: Sunghwan Kim el 29 de Jun. de 2022
I need to do the following job
Alq_4_t.Properties.VariableNames{1} = 'mz';
...
Alq_36_t.Properties.VariableNames{1} = 'mz';
So, I made a loop like this.
"i=4;
while i<37
Alq_i_t.Properties.VariableNames{1} = 'mz';
i=i+1;
end "
I run this script and there was no error. However, the variable names were not changed at all. Can anyone let me know why? Thanks in advance.
  1 comentario
Stephen23
Stephen23 el 29 de Jun. de 2022
Editada: Stephen23 el 29 de Jun. de 2022
"Can anyone let me know why?"
Because a literal "i" in the variable name is not automagically updated using the value of some variable that happens to be named "i". Imagine the chaos that would ensue if that were the case.
Forcing pseudo-indices into the variable names forces you into writing slow, complex, inefficient, obfsucated, buggy code when you try to access your data in a loop:
In contrast, when using actual indices your code will be simpler and much more efficient. You should use indexing.
You have not told us the most important information: how did you get all of those variables into the workspace? I doubt that you named them all by hand...

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Keshav
Keshav el 29 de Jun. de 2022
Editada: Keshav el 29 de Jun. de 2022
you can not use i as a variable inside Alq_i_t variable name. and instead of making 36 different variable you can make an array of size of 36 by using below code.
i=1;
while i<37
Alq_t{i}.Properties.VariableNames{1} = 'mz';
i=i+1;
end

Más respuestas (1)

KSSV
KSSV el 29 de Jun. de 2022
i=4;
while i<37
Alq_i_t.Properties.VariableNames{i} = 'mz';
i=i+1;
end

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