from string array to variable names

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Meh 2012-3-29

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https://ww2.mathworks.cn/matlabcentral/answers/33916-from-string-array-to-variable-names

Hallo, I have a string array, say array A which has elements like A1 A2 A3 And I want to change them to variable names so that I can create another array based on these names. For example: for i=1:n A(i,1)= [X(i,1),Y(i,1)] end where X and Y are other arrays.

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Answer 1

Matt Kindig 2012-3-29

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https://ww2.mathworks.cn/matlabcentral/answers/33916-from-string-array-to-variable-names#answer_42548

在 MATLAB Online 中打开

You can use genvarname to generate variable names.

doc genvarname

However, you probably don't want to actually do this. MATLAB recommends against making variables like A1, A2, etc. See below for suggested workarounds.

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

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Meh 2012-3-29

Thank you Matt,

but the above string matrix was just as an example. the actual elements look like AIW30 BWK90 SW94 . Do you think that the genvarname can stil give me the variables?

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Answer 2

Jan 2012-3-29

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https://ww2.mathworks.cn/matlabcentral/answers/33916-from-string-array-to-variable-names#answer_42560

Using strings as variable names works with eval. But care for the FAQ link Matt has posted. Creating variables dynamically is a bad programming style, prone to errors, nearly impossible to debug and it slows down Matlab substantially.