How can use a for loop to name a matrix?

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Matthew
Matthew 2015-3-27
编辑： Stephen23 2023-9-12
After each iteration of my for loop, a matrix is produced. I want to name that matrix based on the number of the iteration. This is what I have so far:
for trials = 1:max_trials
a = int2str(trials);
a = output_matrix;
However, Matlab just stores the last matrix produced under the variable 'a'. How can I get it to store each matrix under its respective iteration? For example, if max_trials = 3, how would I get three separate matrices labelled '1', '2' and '3'?
Thank you!

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Stephen23
Stephen23 2015-3-27
编辑：Stephen23 2023-9-12
Use a cell array like this:
out = cell(1,max_trials);
for trial = 1:max_trials
out{trial} = ... your calculation here
end
Avoid creating dynamically named variables:
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

更多回答（1 个）

David Young
David Young 2015-3-27
One way is to use a cell array, like this
for trials = 1:max_trials
< compute result, assign to a >
output_matrix{trials} = a;
end
Then output_matrix{k} is the value of the a matrix for iteration k.
Don't try to assign the result of each iteration to a different variable by constructing different names inside the loop - it's a very bad way to do it.

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