MATLAB: How to to locate all Stateflow 8.0 (R2012b) transitions with disconnected endpoints in a model

disconnectstateflowunconnect

I want to find all transitions in my model's Stateflow charts with endpoints that are not connected to anything. How can I do this?

Best Answer

This can be done using the Stateflow API:

rt = sfroot;
modelHandle = rt.find('-isa','Simulink.BlockDiagram','$MODELNAME');
disconnectedTransitions = modelHandle.find('-isa','Stateflow.Transition','-and','Destination',[]);

The variable disconnectedTransitions will be an array of Stateflow.Transition objects that are not connected to a destination object. These transitions should come from any Stateflow chart within the model. $MODELNAME in the above code should be replaced with the name the model containing the charts/transitions. The VIEW method of the Stateflow.Transition object can be used to view the location of specific transitions.

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MATLAB: How to delete (all) Requirement Traceability links of Stateflow transition-lines by command

I'm assuming that you have your 55x1 array of transition objects with you. Post that you can use 'rmi' API to programmatically handle requirements. Here's a doc link: https://www.mathworks.com/help/slrequirements/ref/rmi.html#d120e5121

Continuing your code, assuming all 55x1 transitions are in a variable tr:

tr = charts.find('-isa', 'Stateflow.Transition') % ans = Stateflow.Transition: 55-by-1
for i=1:length(tr)
    current_object = tr(i);
    if(rmi('count',current_object)~=0) %Check if no of requirements linked to the transition is nonzero
        rmi('clearAll', current_object,'noprompt')  % Delete the requirements without throwing a dialog prompt
    end
    
end

You can use rmi and automate this process for other stateflow objects like states as well.

MATLAB: How to modify the default junction size for the Stateflow Editor

The ability to change the default junction size for the Stateflow Editor is not available in Stateflow since there are no chart- or machine-level properties controlling these. As a workaround, write functions to modify properties for objects created in MATLAB code as follows:

sfnew
save_system(gcs,'un1')
rt = sfroot;
m = rt.find('-isa','Stateflow.Machine','Name','un1');
chart = m.findDeep('Chart')
%get a handle to the junction
   j = Stateflow.Junction(chart)
   jp = j.Position
   jp.Radius = 25 %Modify the Radius

For information on the default chart level properties that can be modified, refer to the solution linked below:

Best Answer

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MATLAB: How to delete (all) Requirement Traceability links of Stateflow transition-lines by command

MATLAB: How to modify the default junction size for the Stateflow Editor

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