For Loop with strings

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Edoardo Briganti 2017-6-27

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https://ww2.mathworks.cn/matlabcentral/answers/346390-for-loop-with-strings

回答： Pratik Anand 2017-7-17

I am dealing with n vectors which represent the values of a variable along time. Each of them is characterized by a code which can be both numerical and text. For example Y_23 and Y_FIRE. I have to make some computations for each of them, for instance: beta_23 = Y_23^2. I was thinking about indexing the variables or making a for loop with string vectors. Anybody may help me please? Thanks in advance.

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Stephen23 2017-6-27

"I was thinking about indexing the variables"

That is a good idea. You should do that.

"or making a for loop with string vectors"

That is most likely a bad idea, because accessing variables from strings is slow, buggy, hard to debug, hard to read... and is strongly discouraged:

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

Although indexing is likely the best option, another option would be for you to put all of your data into a structure, then you can simply access and pass any of those values by using the fieldnames.

Edoardo Briganti 2017-6-27

Thanks for your help Stephen. I will follow your advice.

Have a nice day.

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Answer 1

Pratik Anand 2017-7-17