MATLAB Answers

How to make a circular graph (node connections)?

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Akshar Agarwal
Akshar Agarwal on 7 Jul 2020
Answered: Kelly Kearney on 9 Jul 2020
I've got my data formatted for use with the digraph plots, but I'd like it to look more like this: https://i.pinimg.com/originals/c6/1c/a2/c61ca29de6c768fe048eca1fe3b48afc.png
Any ideas?

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Answers (2)

Steven Lord
Steven Lord on 7 Jul 2020
Use the layout function to layout your digraph using the 'circle' layout.

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Akshar Agarwal
Akshar Agarwal on 9 Jul 2020
That's not really what I meant. Is there a way to make the chord diagram "prettier", like the example provided? I currently have to do this in R but it'd be nice to have it all in Matlab.

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Kelly Kearney
Kelly Kearney on 9 Jul 2020
The short answer is that you can indeed make these in Matlab, but it's not simple.
You basically need to recreate the calculations for edge paths from d3's chord diagram layout code (R's chorddiag is a wrapper around that library), then plot said paths as either line or patch objects (I prefer patches because they make it easier to customize the edge width and color and add transparency).
Alternatively, you can code it in javascript and render it in an html window via Matlab's web command. Definitely not for the faint of heart... :-)
I could probably demonstrate (the all-Matlab version) if you have a simple example dataset.

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