How build an variable output for my function

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Jonathan Roy
Jonathan Roy 2016-1-27
编辑： Stephen23 2016-1-30
Hi
I have a simple function, for exemple:
[ax] = testthat(x,y)
I use this function a lot an need to create a different output name to [ax] for exemple first time the name shold be "a1" second time "b1"... and keep all these output variable availlable.
I try
al=('a':'z').';
[al(3) num2str(1)] = testthat(x,y)
But clearly it is not the good way to make it...
  1 个评论
Stephen23
Stephen23 2016-1-28
编辑：Stephen23 2016-1-30
It is certainly "not the good way to make it", because there is no "good way to make it", because using dynamically named variables is very bad way to "make it", which unfortunately beginners seem to fall in love with.
Read this link to know why dynamically named variables is a slow, buggy and obfuscated way to program, and what much better alternatives there are:
http://www.mathworks.com/matlabcentral/answers/196952-how-to-create-new-variables-in-batches-with-strcat
Browsers: do not follow the accepted answer, read the link above to know why.

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采纳的回答

Jonathan Roy
Jonathan Roy 2016-1-27
I know it is not the best way... but I realy need to work that way.
I find a solution, I use eval() an other not recommand method but it work for my.
Thank you Star Strider for your fast help!
  2 个评论
Star Strider
Star Strider 2016-1-27
My pleasure.
I absolutely cannot understand why dynamic variables would be preferable to an array.
Stephen23
Stephen23 2016-1-28
编辑：Stephen23 2016-1-28
@Jonathan Roy: read this to know why dynamically named variables are a really bad way to program (no matter how much beginners love them):
http://www.mathworks.com/matlabcentral/answers/196952-how-to-create-new-variables-in-batches-with-strcat
You should have used either a cell array (as per Start Strider's answer) or a multidimensional array.

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更多回答（1 个）

Star Strider
Star Strider 2016-1-27
If you are doing it in a loop, subscript it as a cell array instead:
for k1 = ...
a{k1} = testthat(x,y);
end
That keeps everything in one array that you can easily work with elsewhere in your code.
It is not good programming practice to create dynamic variables, such as ‘a1’, ‘a2’ and so forth. They are difficult to work with.

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