Equal-sized arcs

Sample data

Let's import PlotAPI and load our sample data.

from plotapi import Chord

names = ["Action", "Adventure", "Comedy", "Drama", "Fantasy", "Thriller"]

Demonstration

It may be desirable to have equal-sized segments in our Chord Diagram. This is possible with PlotAPI, and makes use of the colored_diagonals feature.

Setting up

The idea is to determine the max frequency in our plot, and set all the diagonals to that value. Let's assume the max frquency is $20$ for this example.

matrix = [
    [20, 0, 0, 0, 0, 0],
    [0, 20, 0, 0, 0, 0],
    [0, 0, 20, 0, 0, 0],
    [0, 0, 0, 20, 0, 0],
    [0, 0, 0, 0, 20, 0],
    [0, 0, 0, 0, 0, 20],
]

Chord(matrix, names, title="Diagonals not coloured", 
      colored_diagonals=False).show()

We can see above that this creates a chord diagram with equal-sized segments.

Populating our relationships

All we need to do now is introduce our relationships, and subtract them from the corresponding diagonal value.

matrix = [
    [11, 4, 5, 0, 0, 0],
    [4, 14, 2, 0, 0, 0],
    [5, 2, 13, 0, 0, 0],
    [0, 0, 0, 20, 0, 0],
    [0, 0, 0, 0, 20, 0],
    [0, 0, 0, 0, 0, 20],
]

With our matrix prepared, we can use PlotAPI with colored_diagonals=False to create a diagram with equal-sized segments and some ribbons between categories. We could add some padding to separate them too.

Chord(matrix, names, colors="league",
      colored_diagonals=False, padding=0.2).show()