From what I understand, you want to obtain separate signals from a Simulink simulation output object, which has been generated using the “To Workspace” block. Then you want to add a dropdown menu in the App Designer, which allows you to select these signals and then plot the selected signal.
In order to do this, you can try the following steps:
After running the simulation, you can extract individual signals from the “simout” object using the get method or dot notation. The signals are in the “timeseries” format by default, so you will have to extract the data and time vectors separately for plotting. Here is an example of the code to help you with this:
signal1 = simout.get('signal1Name');
time1 = signal1.time;
data1 = signal1.data;
You can also use the “who” function to obtain the names of all simulation output variables, including workspace variables, as follows:
simoutVars = simout.who;
Once you have split the “simout” object into its constituent signals, you can create a dropdown menu from the “Component Library” in the App Designer. This dropdown can be populated based on the extracted signals. In order to achieve this, click on the “app.DropDown” option in the component browser. In the dialog titled “Items”, type the names of the desired signals.
To plot these signals in the App Designer pane, first add an “Axes” component from the “Component Library”.
Next, use a callback function for the dropdown menu. In the “Code View” of the App Designer, modify the callback function to plot the values of the signal selected in the dropdown. Here is an example code to help you with this:
function dropDownValueChanged(app, event)
selectedSignal = app.SignalDropdown.Value;
switch selectedSignal
case 'signal1Name'
plot(app.UIAxes, time1, data1);
case 'signal2Name'
% Similarly plot other signals
end
end
This callback function should plot whichever signal is selected from the dropdown menu, and it will be called whenever the selected signal is changed.
