for loop - splitting data

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Theodore Bowen
Theodore Bowen 2017-4-13
编辑： Stephen23 2019-6-19
I shall try to explain clearly, again.
I have a cell array:
Fish2 = Data{1,10,6};
I want to create a loop that will form the following groups:
Fish2_1 = Data{1,3,1};
Fish2_2 = Data{1,3,2};
I started with something like this:
C = 1:size(Fish2,3);
for i = 1:c
Fish2_i = Data(1,3,i);
end
This is obviously not operating the way i would like it to. I was hoping i would get 6 outputs, following the same pattern as the first coded sequence above.
I hope this is clear enough.
Thank you in advance.

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采纳的回答

ES
ES 2017-4-13
you have to do an eval.
eval(['Fish2_', num2str(i), ' = Data(1,3,i);'])
instead of
Fish2_i = Data(1,3,i);
  2 个评论
Theodore Bowen
Theodore Bowen 2017-4-13
This is why i love matlab. Thank you very much.
Stephen23
Stephen23 2017-4-14
编辑：Stephen23 2017-4-14
DO NOT USE THIS CODE
This is not recommend by The Mathworks (who actually write MATLAB), nor by any experts on this forum. This is slow, buggy, and inefficient code that is loved by beginners, and by those who do not understand how to use MATLAB efficiently.
If any reader is actually interested in learning how to use MATLAB efficiently then read this documentation:
https://www.mathworks.com/help/matlab/matlab_prog/string-evaluation.html
And also this thread (and all of its links):
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
@Theodore Bowen: please actually take the time to read the MATLAB documentation on this topic, and all of the links that I gave. Once you have learned why using eval totally destroys all JIT acceleration, all code checking tools, etc., then you can decide if you really want to use bad coding methods:
https://blogs.mathworks.com/videos/2010/03/08/top-10-matlab-code-practices-that-make-me-cry/
PS: you should actually be using indexing, exactly like I showed you in my answer to your earlier question:
Fish{k} = Data(1,3,i);
will be significantly faster, simpler, neater, easier to read, much less buggy, and easier to debug than any method using eval.

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