Real Time Plotting in Gui by taking data from Simulink

Hi,

I have a real time simulation and i want to make a real time plot in gui. When i take the data from simulink it gives me a finished plot while my simulation is still i running. I want to generate my plot when the action is happening not before. Is there a way to do so?

Answer 1

[Jon]

One way to do this is using get_param to get data from run time objects

Please see https://www.mathworks.com/help/simulink/ug/accessing-block-data-during-simulation.html

[Jon]

First start your simulation running, blocks don't have run time objects until simulation is running

Get the run time objects for the desired blocks using something like:

rto = get_param('myBlockName','RunTimeObject')

note if you don't know the block's name (here I just called it 'myBlockName', you can select the block in the diagram, and then on the command line issue the command

gcb

which will display the block name.

Once you have the run time object assigned to the variable rto, you can get data out of it at any time while the simulation is running using

val = rto.InputPort(1).Data
val = rto.OutputPort(1).Data

to get the instantaneous value of the block input and the output respectively

[Michael Bernstein]

Visit http://www.oscilloscope-lib.com

I suppose it is fastest real-time plot. Has Simulink linking example.

Well documented. World-wide known.