How to plot a Simulink Desktop Real-Time model output in an App Designer app?

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I need to create an app that runs a Simulink Desktop Real-Time model and plots the output in the app. The model has a Analog Input block connected to a scope. For having the signal output to the workspace, I configured the scope properties --> logging and checked 'log data to workspace'.
In the app, I am having an UIAxes for plotting the simulation output.
Eventhough I am capable of running the model using 'set_param' command, I am unable to plot the output in the UIAxes.
Any information will be helpful and thanks in advance.

Accepted Answer

Ankit
Ankit on 14 Jun 2021
Hi Nagendra,
There are different ways to acheive and one solution you can find in the below link:
let me know if you are looking for this
  4 Comments
Nagendra Vankadari
Nagendra Vankadari on 29 Jun 2021
Edited: Nagendra Vankadari on 29 Jun 2021
Actually I am not having a clear idea of why X1 and y1 have only one value. I am thinking, once I have a proper running model that posts aleast the point (X1,Y1) into the app, then I will look into the line plotting.
Coming to Tag, the reason for not including it is I have given the in the UIaxes property section.
But after you mentioned it I created a similar new app and simulink model and tried the way you mentioned it, also added the missing lines like persistent and drawnow commands.
Here is the updated model: The simulink model is similar
the App button callback
app.UIAxes.Tag = 'plotAxes';
load_system('sineTest');
set_param('sineTest/Sine Wave', 'Amplitude', num2str(app.AmplitudeEditField.Value));
set_param('sineTest', 'SimulationMode','normal');
set_param('sineTest', 'SimulationCommand','start');
The Lister function code.
function varargout = plotApp(varargin)
persistent plotting
hf = findall(0, '-property','tag' );
ht = get(hf, 'tag');
[a,b] = ismember('plotAxes',ht);
if a
plotting = hf(b);
end
rto1 = get_param( 'sineTest/Scope','RuntimeObject');
Y1 = rto1.InputPort(1).Data;
X1 = get_param('sineTest','SimulationTime');
plot(plotting, X1,Y1);
hold(plotting, 'on');
%guidata(hf)
drawnow
but still the same result, that I dont see any plot or point in app axes. Are yo able to find any mistakes? Also Im including the debugging screenshot
Ankit
Ankit on 30 Jun 2021
function varargout = plotApp(varargin)
persistent plotting
hf = findall(0, '-property','tag' );
ht = get(hf, 'tag');
[a,b] = ismember('plotAxes',ht);
if a
plotting = hf(b);
end
rto1 = get_param( 'AppDesignSetup/Scope','RuntimeObject');
Y1 = rto1.InputPort(1).Data;
X1 = get_param('AppDesignSetup','SimulationTime');
plot(plotting, X1,Y1,'.');
hold(plotting, 'on');
%guidata(hf)
drawnow
App Code View:
function StartButtonPushed(app, event)
app.UIAxes.Tag = 'plotAxes';
cla(app.UIAxes);
load_system("AppDesignSetup.slx")
set_param('AppDesignSetup/Sine', 'Amplitude', ...
num2str(app.AmplitudeEditField.Value));
set_param('AppDesignSetup', 'StopTime',num2str(app.DurationEditField.Value));
set_param('AppDesignSetup', 'SimulationMode', 'normal');
set_param('AppDesignSetup', 'SimulationCommand','start');
end
I already shared you the documentation for this. Hence I would request you next time please follows the steps provided in the answer and documentation.
Wish you all the best.

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