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how can I save from MATLAB

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Ammy
Ammy 2018-1-26
关闭： MATLAB Answer Bot 2021-8-20
I have generated a large number of matrices in MATLAB , all these are appear on the MATLAB comand window as;
Matrix 1 =
1 2 3
2 3 1
3 1 2
Matrix 2 =
1 2 3
3 1 2
1 3 2
and so on , How can I save all these in one file, and how can I used the resulting matrices in my latter work?
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Domanic
Domanic 2018-1-26
With your variables, you could save them using:
save('filename.mat','Matrix1','Matrix2',...)
However, as KSSV points out, it would be best to save these matrices as a single variable, or a cell array of matrices. If you're stuck with those matrix names, you can use the function 'eval' to automate saving.
Stephen23
Stephen23 2018-1-26
编辑：Stephen23 2018-1-26
"If you're stuck with those matrix names, you can use the function 'eval' to automate saving."
Why bother? It is much simpler to use save and a regular expression:
save('file.mat','-regexp','Matrix\d+')
eval is what beginners use to force themselves into writing slow, complex, buggy code:
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
The best solution though, as others have already noted, is to not use numbered variables.

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回答（1 个）

Daniele Defilippi
Daniele Defilippi 2018-1-26
If the variables are inside the MATLAB workspace you can use the command
save('MyFileName.mat');
when you want to restore the variables you can use the command.
load('MyFileName.mat');

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