want to use a 'for' loop to swich between variables, like varname_1+n

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Simon Simon 2015-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/223245-want-to-use-a-for-loop-to-swich-between-variables-like-varname_1-n

编辑： Stephen23 2019-6-19

采纳的回答： Stephen23

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I'm using a syntax to creat variables, in the next step I want to use the variables one by an other in a 'for' loop.

syntax to creat the variables: like A_1, A_2, A_3, ...

for f=1:1:18
a_LLK{f} = 'a_LLK_';
end
varnamelist1 = genvarname(a_LLK);
for l=1:1:18
      eval([genvarname(['a_LLK_' num2str(l)]) '= ...']);
     end

now I want to put the values of the createt variables in a Matrix.

for m=1:1:18
    B_LLK(:,m) = a_LLK_ *'m'*
  end

so that it will be count:

B_LLK(:,1) = a_LLK_1

B_LLK(:,2) = a_LLK_2

B_LLK(:,3) = a_LLK_3

. . .

thanks for help

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Simon Simon 2015-6-10

thats just a piec of the function usualy a_LLK_n are fft's in form of matrices. And I will take the inverse of the fft and put the results in B_LLK. Just try to write compact and short;)

Stephen23 2015-6-10

编辑：Stephen23 2015-6-10

@Simon Simon: Don't create the variables dynamically like this in the first place. Bad programming practices like this should be avoided. Use an N-D array, a cell array or a structure instead.

Beginners often think that it is a great idea to put meta-information is a variable name (e.g. consecutive numbers or test conditions), but really this is programmatically a poor idea: it prevents variable tracking and code checking tools from working, is slow and very buggy.

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