MATLAB: How to convert a string into a variable

string to variable

Hello,

I have a variable (vector) defined at the beginning of my code, say A1. Then I define string:

Name=strcat('A','1');

Now Name='A1'. How can I convert it into a variable? It might not make sense to define a string with a variable and try to convert it to the variable itself but it will be helpful in my code. Thank you!

Best Answer

doc genvarname

http://www.mathworks.com/help/techdoc/ref/genvarname.html

'eval' can do it however...

'EVAL' is very dangerous to use and is very hard to debug..

Here are some techniques given by Walter in reply 2 that explain what you can do, and what you should not do..

http://www.mathworks.com/matlabcentral/newsreader/view_thread/159440

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MATLAB: How to write a1=1;a2=2;a3=3; from A

Do NOT do this

This would actually be horribly slow, pointlessly complex, obfuscated, and very buggy way to write your code. You would make your code hard to debug, and a pain to work with. Read this to know why:

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

Using indexing would be simple, neat, and very efficient. You should use one array and indexing. Indexing is the solution you should be using, because it is the most efficient way to write MATLAB code, is simple, neat, and very easy to debug. Indexing is explained quite well in the MATLAB introductory tutorials, which are highly recommended for all beginners:

https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

MATLAB: How to replace ‘genvarname’ with ‘matlab.lang.makeValidName’

temp = 'abc'
v = matlab.lang.makeValidName(temp)
eval([v,'=5'])

Best Answer

Related Solutions

MATLAB: How to write a1=1;a2=2;a3=3; from A

MATLAB: How to replace ‘genvarname’ with ‘matlab.la​ng.makeVal​idName’

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MATLAB: How to replace ‘genvarname’ with ‘matlab.lang.makeValidName’