Plotting in a GUI in RTW

Hello everyone.

I've written an 'Embedded MATLAB Function' that allows me to plot realtime data from a Simulink model in a GUI (which I created in GUIDE).

function flag = fcn(x, y)
%#eml

eml.extrinsic('plot', 'findobj');

axesHandles = findobj('Type', 'axes', 'Tag', 'axTrack');

plot(axesHandles, x, y, 'b-');

flag = 0;

This code works without any problems when I just run simulations.

As soon as I try this within RTW, it doesn't work anymore. While RTW was running, I tried to plot a point on my GUI with the same syntax, but from the Command Window

axesHandles = findobj('Type', 'axes', 'Tag', 'axTrack');

plot(axesHandles, 0, 0, 'b+', 'MarkerSize', 10);

and it worked.

Does somebody know how to make it work in the EMF?

Thank you in advance.

Francesco

Answer 1

[Francesco]

I solved the problem using event listeners.

[Francesco]

http://www.mathworks.com/matlabcentral/fileexchange/24294-simulink-signal-viewing-using-event-listeners-and-a-matlab-ui

Answer 2

[Kaustubha Govind]

RTW generates code for embedded systems - MATLAB graphics are therefore not supported in generated code. In fact, documentation for eml.extrinsic clearly states that code is not generated for functions called this way.

Answer 3

[Francesco]

I see. Thanks. Do you know how I could plot the data I get from simulink?

(I get x and y coordinates and I would like to display them in my GUI)