Create a variable from string

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Matt 2015-9-1

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https://ww2.mathworks.cn/matlabcentral/answers/238692-create-a-variable-from-string

编辑： Stephen23 2019-6-19

Hello!

In my Matlab program, I have a class named "time". In this class I have a variable named "car". in a FOR loop, I am adding coefficients to this variable which gives me "car1", "car2", "car3". But I want these variables to remain in the "time" class.

How can I do it? I used to have something like this before creating the "time" class:

assignin('base', ['car' num2str(count+1)], somevalue);

This would give me the variables "car1", "car2", and so on, depending on the "count" variable. But how can I make the "time.car1", "time.car2", "time.car3" variables? ASSIGNIN doesn't accept classes in the variable name.

Thanks in advance!

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Stephen23 2015-9-1

编辑：Stephen23 2015-9-1

You should never include pseudo indices in variable names. Just use one variable and actual indices instead, in a numeric, cell or structure array. Here are some discussions that explain why this is a bad idea:

http://www.mathworks.com/matlabcentral/answers/225435-save-variable-as-string-from-user-input

http://www.mathworks.com/matlabcentral/answers/56124-eval-is-evil-using-variables-created-dynamically-info-retrieval#answer_67978

http://de.mathworks.com/matlabcentral/newsreader/view_thread/303123

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