How can I get a variable name to include a string of text?

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Jodok Waibel
Jodok Waibel 2022-5-24
回答： Jan 2022-5-27
I need a series of variable names to have the same text included in the name. Is there a way to do this? For example, I want something like:
text='AB1'
aAB1=1;
bAB1=2;
cAB1=3;
But rather than writing AB1 I want to call text and have that insert AB1 into the variable name. Basically a(text) is aAB1 and b(text) is bAB1.
I know this is bad practice and it makes matlab run slowly. However this would help me in my workplace a lot since i have about 1800 sets of data that need to be named in a certain pattern.
Thank you for your help, Jodok.
PS: I am working with release 2020b.
  1 个评论
Stephen23
Stephen23 2022-5-24
编辑：Stephen23 2022-5-24
"However this would help me..."
Unlikely.
"... since i have about 1800 sets of data that need to be named in a certain pattern."
Why do they need to be named in a particular pattern? What will you do with them?
Instead of describing the actual problem, you are describing your attempted solution:
https://xyproblem.info/
https://en.wikipedia.org/wiki/XY_problem
https://meta.stackexchange.com/questions/66377/what-is-the-xy-problem
Tell us what you are actually trying to achieve, what tools/functions/data you are using. Do not assume a solution.

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回答（2 个）

Mustafa Abu-Mallouh
Instead of defining the variable name with text (as you mentioned, bad practice), would you be able to use a structure instead?
MATLAB lets you generate field names from variable data, see this link for more details:
https://www.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html
Jan
Jan 2022-5-27
Ran in:
Read Stephen23's hints carefully, because they are valuable.
Storing important information in the names of variables is a programming anti-pattern. It produces more problems than it solves. Remember, that Matlab replaces variables by simple pointers to the data during the execution of the code, so keeping important details inthe names is a confusing indirection.
Store the information as data instead:
text = 'AB1';
names = sprintfc(['%c', text], 'abc')
names = 1×3 cell array
{'aAB1'} {'bAB1'} {'cAB1'}
data = [1,2,3]
data = 1×3
1 2 3
Now you can work with the names array to identify the index of a specific value of data.
But currently it looks, like the redundant text can be omitted - because it is redundant...

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