How can I come to know whether a stateflow chart is open from command prompt?

Hi,

I have stateflow in my model.If stateflow is open,then while doing simulation , it takes lot of time since it animates it. So I want to make sure that whether the staeflow in my model is open or not & if it is open then I want to close it first then save the model(so that when I run sim command, it will run quickly with state chart closed), but if stateflow is not open then there is no need to save the model & I can run sim command directly.using sfclose is an option, but it do not tell me whether stateflow was open or not(so I cant decide whether to save model or not ), I want to confirm first that it is open & then only I want to use sfclose. I have tried hndls =find_system(<mdl>,'BlockType','SubSystem','Open','on'); but it gives empty array even though stateflow chart is open or closed.

Please suggest. Thanks is advance! Sameer

Answer 1

[Fangjun Jiang]

sfclose only closes the opened Stateflow window. It doesn't impact the "save" status of the model at all. So it's safe to run sfclose('all') before you run simulation to speed it up.

To find the Stateflow chart, you need to add the 'MaskType','Stateflow' pair. But it won't find the opened Stateflow it you combine it with the 'Open','On' pair. There might be a way, but I don't think it matters for your purpose.

For the sake of knowing how to do it.

rt = sfroot;
chart = rt.find('-isa','Stateflow.Chart');
set(chart,'visible',1);
set(chart,'visible',0);

[Kaustubha Govind]

Oops! You beat me to it, Fangjun! :)

Answer 2

[Kaustubha Govind]

You can use the Stateflow API to do this:

   myModel = 'sf_car';
   open_system(myModel);
   rt = sfroot;
   m = rt.find('-isa', 'Simulink.BlockDiagram', '-and', 'Name', myModel);
   ch = m.find('-isa','Stateflow.Chart');
   anyOpen = false;
   for i = 1:numel(ch)
     if ~anyOpen && (ch.Visible==1)
        anyOpen = true;
     end
     if (ch.Visible==1)
       ch.Visible=0;
     end
   end
   if anyOpen
     save_system(myModel);
   end