prevent creating workspace variables

Question

Leif 2013-10-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/91321-prevent-creating-workspace-variables

评论： Leif 2013-11-8

Question: Is there a way (e.g. a command) to prevent Simulink generally to write data to workspace even if the scopes checkboxes are selected ?

Explanation: If you have a complex System with many signals and states you also need a lot of scopes and if you want to evaluate the signals in MATLAB you also need to save a lot of data into workspace. That slows down the computer.

For only to quickly see the change of a singe parameter you want a fast simulation, but unchecking all scope's boxes takes too long.

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Answer 1

John Barber 2013-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/91321-prevent-creating-workspace-variables#answer_100685

在 MATLAB Online 中打开

Try this:

h = find_system(bdroot,'BlockType','Scope');
for k = 1:length(h)
    set_param(h{k},'SaveToWorkspace','off');
end

You could turn this into a function, and to get fancy, could have it toggle the value by reading the current parameter value for each scope block, then setting it to the opposite. In this way, you could just call the function at the command line to toggle the data export on or off.

Note that you may need to add some options to the find_system() call if you have scopes inside of masked subsystems or things like that. See the help doc for find_system for details.