MATLAB Answers

Turn a simulink model into a digraph

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Darin McCoy
Darin McCoy on 16 Sep 2016
Edited: Monika Jaskolka on 25 Jul 2019
I have a simulink model that I would like to turn into a digraph (<http://www.mathworks.com/help/matlab/ref/digraph-object.html>)
Essentially what I want to do is find all of the blocks... find all of the blocks they are connected to... make this a matrix... and then feed it into digraph.
I'm starting with code similar to this one https://www.mathworks.com/matlabcentral/answers/216496-m-script-how-to-find-which-block-is-connected-to-which-block
which includes things like
allBlks = find_system(myModel,'FindAll','on','FollowLinks','on','Type', 'block');
allPorts = get_param(allBlks(k), 'PortConnectivity');
etc, etc... but that doesn't take care of the complexity of subsystems, multiple ports, bus's, etc. Any ideas? (Or has anybody else tried to solve this problem?)

  3 Comments

Akbar
Akbar on 17 Apr 2018
Have you found a solution to your Problem so far? I Need to do similar thing too.
Darin McCoy
Darin McCoy on 17 Apr 2018
Sort of. I've started creating code to do just the thing I described above. It's ugly, but it does work (in most cases). If I have time, I'd like to make this code open source
sibabalo noludwwe
sibabalo noludwwe on 23 Jul 2019
May you please share on how you did it

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Answers (1)

Monika Jaskolka
Monika Jaskolka on 22 May 2018
Edited: Monika Jaskolka on 25 Jul 2019
You may be interested in some functions provided by the Auto Layout Tool available on the File Exchange. Those provided in src/GraphPlot_Portion, particularly blocksToDigraph.m and plotSimulinkDigraph.m, deal with generating a digraph from a Simulink subsystem.

  2 Comments

sibabalo noludwwe
sibabalo noludwwe on 24 Jul 2019
hi Monika,
I have a problem generating a digraph from my simulink system. i tried running the function plotSimulinkDigraph(IEEE_9bus_new_o,diagraph(A, nodes)); and it is giving me parameter warining and errors. and the error is Undefined function or variable 'A'. I am not sure is I am calling the function correct. please assist me I am quite new in matlab.
my Simulink system is modelled using simscape elecetrical I am not sure if that is the problem.
Monika Jaskolka
Monika Jaskolka on 25 Jul 2019
Please look at the script comments at the top of each file to understand how they work.
b = find_system('IEEE_9bus_new_o', 'SearchDepth', 1, 'Type', 'block');
h = get_param(b, 'Handle');
h = cell2mat(h);
dg = blocksToDigraph(h)
plotSimulinkDigraph(h, dg)

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