MATLAB: Can I comment out a block programmatically

simulink

I would like to stop logging data to workspace after importing some data from a model into my script. I would like to do that by commenting out the "ToWorkspace" block. Is there a way to do that in my script?

Best Answer

You can comment out a block by using the following command in a script.

>> set_param('modelName/ToWorkspace','commented','on')

To uncomment the same block.

>> set_param('modelName/ToWorkspace','commented','off')

You can use this command to comment out the ToWorksapce block after getting the data from the model.

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MATLAB: Does “setVariable” in Simulink Test not update variables

In R2019b, the behavior of "setVariable" is modified such that it overrides only model variables (as opposed to MATLAB variables).

I attached a simpler model ("SimpleVars_R2019b.slx") to help illustrate this. This model has two "From Workspace" blocks, one set to "a" and one set to "evalin('base', 'b')".

If you call "findVars" on this model, only "a" is considered to be a model variable, even though both output their timeseries when run:

>> vars = Simulink.findVars('SimpleVars_R2019b')
vars = 
    VariableUsage with properties:
            Name: 'a'
          Source: 'base workspace'
      SourceType: 'base workspace'
           Users: {'SimpleVars_R2019b/From↵Workspace'}

The R2019b behavior provides stricter control of overrides and achieves parity with other Simulink tools. You will need to update the model to use variables which are recognized by Simulink.

Please update the "From Workspace" block variable parameter from "evalin('base', 'y_coordinate')" to just "y_coordinate". Then save the model and run the test file again.

You should observe that "setVariable" updates all of the variables now.

MATLAB: How to programmatically replace a referenced model with a Subsystem in Simulink

Assuming that you have a 'parent.slx' model which references a model 'child.slx' (whose block name is 'Model' in the parent Simulink model), use either of the following options:

>> open_system('parent');

>> add_block('built-in/Subsystem',['parent/mySub']);

>> load_system('child');

>> Simulink.BlockDiagram.copyContentsToSubsystem('child',['parent/mySub']);

>> pos = get_param('parent/Model','position');

>> delete_block('parent/Model');

>> set_param('parent/mySub','position',pos);

>> open_system('parent');

>> load_system('child');

>> convert2subsys('child');

>> add_block('child/Subsystem','parent/mySub');

>> pos = get_param('parent/Model','position');

>> delete_block('parent/Model');

>> set_param('parent/mySub','position',pos);

>> close_system('child',0);

where 'convert2subsys' is defined at the following link:

https://uk.mathworks.com/help/simulink/slref/simulink.blockdiagram.createsubsystem.html#br5mgzk-6

Please refer to the attachment for further details.

Best Answer

Related Solutions

MATLAB: Does “setVariable” in Simulink Test not update variables

MATLAB: How to programmatically replace a referenced model with a Subsystem in Simulink

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