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How to programmatically comment/uncomment a Simulink block?

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Simulink blocks can be commented/uncommented using Ctrl+Shift+X.
Is there a way to do this programmatically in a Matlab script?
  3 Comments
Akhilesh
Akhilesh on 30 Mar 2024
how to pogrammatically comment and uncomment all the blocks in the simulink model ?
madhan ravi
madhan ravi on 30 Mar 2024
@Akhilesh I am not sure if the following works:
ModelName = 'my_model.slx'; % here you put the name of your Simulink model
set_param(ModelName,'Commented','on')
set_param(ModelName,'Commented','off')
Because in documentation it only mentions about commenting out a block. But even so be the case, you can simply engulf your whole model into a Subsystem and simply comment out that Subsystem block.

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Accepted Answer

Sebastian Castro
Sebastian Castro on 9 Dec 2015
Yes, you can do
set_param(blockName,'Commented','on')
set_param(blockName,'Commented','off')
... or if the block has 1 input and 1 output port, you can also comment through
set_param(blockName,'Commented','through')
Here, blockName is the name of the block, which you can obtain by selecting the block and typing gcs.
- Sebastian
  3 Comments
Mike Crawford
Mike Crawford on 20 May 2019
To add to this, it can save an additional step by selecting the block and typing "gcb" instead of "gcs".
Dick Benson
Dick Benson on 27 Jun 2020
Excellent. I was lost in the myriad parameters each block / component has.
set_param([gcs,'/L(',num2str(k),')'],'Commented','on')
selects L(k) from the current system and comments it out.

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More Answers (1)

RAGHUVEER RAJESH
RAGHUVEER RAJESH on 21 Sep 2023
Edited: RAGHUVEER RAJESH on 21 Sep 2023
The path value has to be passed as a string. So put the path in ' ' single inverted commas.
For e.g.
set_param('subsystempath','Commented','on')
set_param('subsystempath','Commented','off')
the 'subsystempath' is full path to that subsystem. For e.g. 'modelName/subsystemName...'
If it helps, please let me know...

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