How to create variables from variable names stored in a array?

Question

Atharva Bhomle 2023-6-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1978349-how-to-create-variables-from-variable-names-stored-in-a-array

编辑： Stephen23 2023-6-5

attributes={'time', 'step', 'cuurent', 'voltage', 'chgAh', 'disAh'};

I have stored variable names in this array and i want to store data in them when using in loop. For eg.

if i call out attributes(2)== {some values} then i want this to create a variable named 'step' and load the given data in it. How can i do it?

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Walter Roberson 2023-6-5

Please read http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval for information about why we strongly recommend against creating variable names dynamically.

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Answer 1

kei hin 2023-6-5

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1978349-how-to-create-variables-from-variable-names-stored-in-a-array#answer_1250489

在 MATLAB Online 中打开

attributes={'time', 'step', 'cuurent', 'voltage', 'chgAh', 'disAh'};
prompt = 'input what you want: ';
input_str = input(prompt,'s');
exp_idx = '([0-9]*)';
[~,idx_str] = regexp(input_str,exp_idx,'tokens','match');
posi_start = strfind(input_str,'==');
value_str = input_str(posi_start+2:end);
idx = str2num(idx_str{1,1});
var_name = attributes{1,idx};
if isempty(str2num(value_str))
    value = value_str;
else
    value = str2num(value_str);
end
assignin('base',var_name,value);