dynamic variable names in a loop

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genesis 2013-7-16

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https://ww2.mathworks.cn/matlabcentral/answers/82190-dynamic-variable-names-in-a-loop

编辑： Stephen23 2019-6-25

hi,

i want to make new variables every time the user key in something. for example, the first user key in 'A', then i want it to be saved in x1. when the second user key in 'B', i want it to be saved in x2.

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Answer 1

Stephen23 2016-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/82190-dynamic-variable-names-in-a-loop#answer_205853

编辑：Stephen23 2019-6-25

https://www.mathworks.com/help/matlab/matlab_prog/string-evaluation.html

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

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Answer 2

Iain 2013-7-16

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在 MATLAB Online 中打开

Thats a really bad idea.

 x={}; %real code
 loop starts here %pseudocode
 stuff = your input function that gets an input %pseudocode
 x{end+1} = stuff; %real code - the way you should do it
 eval(['x' num2str(loop_counter) ' = stuff;']) % real code - slow and awkward until the loop counter gets huuuge.
 loop ends here %pseudocode
 x{1}
 x{2} 
 x{3}