Error in graphplot Function (Econometrics Toolbox - DTMC)

Question

Hayden 2023-6-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1988913-error-in-graphplot-function-econometrics-toolbox-dtmc

评论： Hayden 2023-6-27

Hi, I have been working with discrete time Markov models for the past month or so, and everything has worked fine up until now. I have been using the graphplot function to visually display the transition states and it worked in the past, but now I am getting a string of errors unrelated to anything in my code. I made a new test file and cleared all of my variables to see if it would run, and I received the same errors. Here is my test code (starting from cleared variables):

p1 = [0.01, 0.5, 0.002;

0.02, 0.001, 0.05;

0.1, 0.4, 0.2]

mc1 = dtmc(p1, "StateNames", ["1", "2", "3"])

gr1 = graphplot(mc1); % this line triggers the errors

This is the most basic information that you would need to run the functions. I had no issues with this 5 days ago, I tried restarting Matlab to no avail. The only thing that has changed between when the code worked and now is that the code path was moved to a new file. If anyone has any idea as to what's going on I would appreciate any help.

Thanks.

errors:

Error using rng

Too many input arguments.

Error in matlab.internal.graph.MLGraph/forceLayout>layoutOneConnComp (line 109)

oldstate = rng(0,'twister');

Error in matlab.internal.graph.MLGraph/forceLayout (line 81)

[x,y] = layoutOneConnComp(x,y,sources,targets,1,gForce,doGravity,iterations);

Error in matlab.graphics.chart.primitive.GraphPlot/layoutforce

Error in matlab.graphics.chart.primitive.GraphPlot/layout>layoutauto

Error in matlab.graphics.chart.primitive.GraphPlot/layout

Error in matlab.graphics.chart.primitive.GraphPlot

Error in digraph/plot (line 112)

hObj = matlab.graphics.chart.primitive.GraphPlot('BasicGraph', ...

Error in dtmc/graphplot/basicPlot (line 268)

hPlot = plot(ax,graph,...

Error in dtmc/graphplot (line 186)

basicPlot(G)

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Hayden 2023-6-27

Matlab has an update so I am trying that

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Answer 1

Steven Lord 2023-6-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1988913-error-in-graphplot-function-econometrics-toolbox-dtmc#answer_1263733

在 MATLAB Online 中打开

I'm guessing you wrote or installed a file named rng.m that's taking precedence over the rng function included as part of MATLAB. To check this, please show us what this command displays:

which -all rng
/MATLAB/toolbox/matlab/randfun/rng.m

If you see a different rng.m (relative to the matlabroot directory which on Linux is /MATLAB/, the MATLAB root directory will be different if you're on Windows) you probably want to rename it or move the directory containing it lower on your MATLAB path (or off the path entirely.) If this is part of a collection of functions or a third-party toolbox that you downloaded you may want to report this conflict to the author of the rng.m file.

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Hayden 2023-6-27

I ran the code after the update that I mentioned and it seems to have run fine now, I ran that line of code anyways and all that came up was rng.m. If I have any issues in the future I will update on this thread. Thanks.

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