for loop in matrix names (Syntax)

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ARS 2012-7-10

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https://ww2.mathworks.cn/matlabcentral/answers/43172-for-loop-in-matrix-names-syntax

采纳的回答： Honglei Chen

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Hi All,

I want to use a new vector every time in my function using for loop. My code is as follows:

for g=1:40
hac=ret(str2num('g'));
results=nwest(hac,ones(length(hac),1),4);
out{1,g}=results;
end;

I want vector/matrix ret to change as ret1,re2.....ret40. The above code produces error. problem is in line2.

Help will be appreciated.

Regards,

AMD.

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采纳的回答

Honglei Chen 2012-7-10

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https://ww2.mathworks.cn/matlabcentral/answers/43172-for-loop-in-matrix-names-syntax#answer_53066

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try

eval(sprintf('ret%d',g))

But please read the following link

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

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ARS 2012-7-10

Thanks Honglei Chen.

Jan 2012-7-10

@Ahmad: Believe the FAQ and consider, that including an index in the name of the variable is a bad programming practice, while using an index as index is fast, clean and flexible.

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MATLAB Language Fundamentals Matrices and Arrays Matrix Indexing

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