MATLAB: Are some block names hidden in a model that I open in Simulink R2017b

blockdisappearedhideautomaticnamenamesimulink

I opened a Simulink model from an earlier version in Release 2017b and noticed that some block names have disappeared. What happened and how can I recover the names?

Best Answer

This behavior is due to the block parameter 'HideAutomaticName' and model parameter 'HideAutomaticNames' which have been introduced in Release 2017b:

As both new parameters are set to 'on' by default, all blocks in your model that have an automatic block name, such as "Integrator", "Gain", "Constant1", etc., are not going to be displayed in Simulink R2017b.

Possible Workarounds:

Option 1:

Click on the "Display" tab on the menu options at the top of the Simulink model editor.
Then uncheck the "Hide Automatic Names" option.

Option 2:

In case you do not want to deactivate the *Hide Automatic Names *option, you may programatically modify the model properties with the following code:

>> load_system('trial')
>> set_param('trial','HideAutomaticNames','off')

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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');

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>> 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);

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

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

>> delete_block('parent/Model');

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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.

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This enhancement has been incorporated in MATLAB 7.5 (R2007b).

As a workaround in previous MATLAB releases, you can use the following MATLAB function to track mouse motion:

function mousetrk
%MOUSETRK function to track mouse motion
% This function creates two static text controls
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figure
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ybox = uicontrol('Style','text','Position',[90 20 60 20],'Tag','ybox');
yboxlabel = uicontrol('Style','text','String','Y Value',...
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callback = ['pt = get(gca,''CurrentPoint'');'...
  'xbox = findobj(''Tag'',''xbox'');' ...
  'ybox = findobj(''Tag'',''ybox'');' ...
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https://www.mathworks.com/help/releases/R2009b/techdoc/infotool/hgprop/doc_frame.html

Best Answer

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

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