Help with Code Problem

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Bilal Bingolbali 2016-3-25

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编辑： Stephen23 2022-2-15

for k=1:0.1:5;
eval(['HT_' num2str(k) '=H;']);
end

This code works for odd numbers(ie 1,2,3,etc) but it wont work with decimal numbers(i.e 1.1,1.2, etc). Its giving an error every time I try. Can anyone please come to rescue? Thanks in advance.

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Stephen23 2016-3-25

编辑：Stephen23 2022-2-15

".what do u suggest I do?"

Do these tutorials:

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

And read these:

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

http://www.mathworks.com/matlabcentral/answers/228557-experts-of-matlab-how-did-you-learn-any-advice-for-beginner-intermediate-users

Walter Roberson 2016-3-25

If it worked, what would you like the result to be for k = 1.2 (for example) ?

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回答（1 个）

Star Strider 2016-3-25

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在 MATLAB Online 中打开

All that said, if you want decimals from num2str, you have to specify a format descriptor:

num2str(k, '%3.1f')

That will work, although I have no idea if it will work in the code you posted.

There is a legitimate reasons to use eval, the most significant being that you have a series of dynamically-created variables that you did not yourself create and that you are saving to a matrix in order to correct the original error in creating them, but beyond that dynamically-created variables are to be avoided.