MATLAB: How to save cell array of workspace vars into mat

matMATLABsaveworkspace

If I have some variables in the base workspace, and a cell array of their names e.g. vars = {'A', 'B', 'C}, how can I use the save function to stores them to a mat? This doesn't work:

save('test.mat', vars)

Best Answer

save('test.mat', vars{:})

How it works:

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists

Related Solutions

MATLAB: How to list variables in save() as an array of strings

use a cell array,

 vars = {'a','b','c'};

and then,

 save('dummy.mat',vars{:})

MATLAB: Evalin(‘base’, ‘save(‘var1’, ‘var2′)’)

The command looks nicer when written as:

evalin('base', 'save(arNames{index(iii,1),:}, arNames{index(iii,1),:})')

This will work if arName and iii is defined in the base-workspace as well as the variable with the name called arNames{index(iii,1),:}. But I assume, these variables are defined in the local workspace. Therefore I stringly recommend not to use evalin for such spoofing tricks.

[EDITED]: To create the command string, when arNames, index and iii are defined locally:

name = arNames{index(iii)};
evalin('base', sprintf('save(''%s'', ''%s'')', name, name));

As usual for eval and its evil brothers, enclose this command in a try, catch block and verify that name is a valid symbol, e.g. by:

if strcmp(genvarname(name), name) == 0
  error('author:toolbox:badSymbol', ...
        'Bad symbol: [%s]', name);
end

This will reduce the risk of a name like "system('format D:')". I do not think, that you use such names. But bugs happen. And by definition bugs are unexpected and have unexpected results. Then it is surely a wise idea to let them not use EVAL/EVALIN as a gun to shoot up your computer. However, avoid EVAL/EVALIN would even be smarter and it is always possible.

Best Answer

Related Solutions

MATLAB: How to list variables in save() as an array of strings

MATLAB: Evalin(‘base’, ‘save(‘var1’, ‘var2′)’)

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