Chord colors

Sample data

Let's import PlotAPI and load our sample data.

from plotapi import Chord

matrix = [
    [0, 5, 6, 4, 7, 4],
    [5, 0, 5, 4, 6, 5],
    [6, 5, 0, 4, 5, 5],
    [4, 4, 4, 0, 5, 5],
    [7, 6, 5, 5, 0, 4],
    [4, 5, 5, 5, 4, 0],
]

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

Demonstration

To specify chord colors, we can set the colors parameter to one of the following:

• A list of color strings, e.g. ["#264653","#2a9d8f","#e9c46a","#f4a261","#e76f51"]. If there are fewer colors than there are categories, PlotAPI Chord will loop round the colors.
• The name of a color scheme from one of the many beautuful presets.

The default color scheme is "rainbow". Let's try a few different color schemes.

Chord(matrix, names, colors="cool").show()

Chord(matrix, names, colors="red_yellow_blue").show_png()

Chord(matrix, names, colors=["#B8D0EB", "cyan", "rgb(111,45,189)"]).show_png()

Color presets

Take advantage of one of our color presets by passing in its name to the color parameter. Choose from one of the following:

['monsters', 'league', 'movies', 'category10', 'accent', 'dark2', 'paired', 'pastel1', 'pastel2', 'set1', 'set2', 'set3', 'tableau10', 'rainbow', 'sinebow', 'yellow_red', 'yellow_brown', 'yellow_green', 'yellow_blue', 'red_purple', 'purple_red', 'purple_blue', 'orange_red', 'green_blue', 'blue_purple', 'blue_green', 'cubehelix', 'cool', 'warm', 'cividis', 'plasma', 'magma', 'inferno', 'viridis', 'turbo', 'brown_green', 'purple_green', 'pink_green', 'red_blue', 'red_grey', 'red_yellow_blue', 'red_yellow_green', 'spectral', 'blues', 'greens', 'greys', 'oranges', 'purples', 'reds']

Flat colors

Visualizations may benefit from flat colors rather the default gradients. Gradient colors can be disabled with gradient_colors=False. This is particularly useful for directed Chord idagrmas.

Chord(matrix, names,
      gradient_colors=False).show()

Stroke color and width

The stroke color and width can be adjusted for chords and arcs in the diagram. This also pairs nicely with gradient_colors=False.

Chord(matrix, names,
      gradient_colors=False,
      chord_stroke_color="black",
      arc_stroke_color="black",
      callout_line_color="black",
      chord_stroke_width=1,
      arc_stroke_width=1).show()