PyWaffle

PyWaffle is an open source, MIT-licensed Python package for plotting waffle charts.

It provides a Figure constructor class Waffle, which could be passed to matplotlib.pyplot.figure and generates a matplotlib Figure object.

PyPI Page: https://pypi.org/project/pywaffle/

Documentation: http://pywaffle.readthedocs.io/

Installation

pip install pywaffle

Requirements

• Python 3.5+
• Matplotlib

Examples

1. Value Scaling

import matplotlib.pyplot as plt
from pywaffle import Waffle

fig = plt.figure(
    FigureClass=Waffle, 
    rows=5, 
    columns=10, 
    values=[48, 46, 6],
    figsize=(5, 3)
)
plt.show()

The values are automatically scaled to 24, 23 and 3 to fit 5 * 10 chart size.

2. Values in dict & Auto-sizing

data = {'Democratic': 48, 'Republican': 46, 'Libertarian': 3}
fig = plt.figure(
    FigureClass=Waffle, 
    rows=5, 
    values=data, 
    legend={'loc': 'upper left', 'bbox_to_anchor': (1.1, 1)}
)
plt.show()

In this example, since only rows is specified and columns is empty, absolute values in values are used as block numbers. Similarly, rows could also be optional if columns is specified.

If values is a dict, its keys are used as labels.

3. Title, Legend, Colors, Background Color, Block Color, Direction and Style

data = {'Democratic': 48, 'Republican': 46, 'Libertarian': 3}
fig = plt.figure(
    FigureClass=Waffle, 
    rows=5, 
    values=data, 
    colors=["#232066", "#983D3D", "#DCB732"],
    title={'label': 'Vote Percentage in 2016 US Presidential Election', 'loc': 'left'},
    labels=[f"{k} ({v}%)" for k, v in data.items()],
    legend={'loc': 'lower left', 'bbox_to_anchor': (0, -0.4), 'ncol': len(data), 'framealpha': 0},
    starting_location='NW',
    block_arranging_style='snake'
)
fig.set_facecolor('#EEEEEE')
plt.show()

Many parameters, like title and legend, accept the same parameters as in Matplotlib.

4. Plot with Icons - Pictogram Chart

data = {'Democratic': 48, 'Republican': 46, 'Libertarian': 3}
fig = plt.figure(
    FigureClass=Waffle, 
    rows=5, 
    values=data, 
    colors=["#232066", "#983D3D", "#DCB732"],
    legend={'loc': 'upper left', 'bbox_to_anchor': (1, 1)},
    icons='child', 
    font_size=12, 
    icon_legend=True
)
plt.show()

PyWaffle supports Font Awesome icons in the chart.

5. Multiple Plots in One Chart

import pandas as pd
data = pd.DataFrame(
    {
        'labels': ['Hillary Clinton', 'Donald Trump', 'Others'],
        'Virginia': [1981473, 1769443, 233715],
        'Maryland': [1677928, 943169, 160349],
        'West Virginia': [188794, 489371, 36258],
    },
).set_index('labels')

# A glance of the data:
#                  Maryland  Virginia  West Virginia
# labels                                            
# Hillary Clinton   1677928   1981473         188794
# Donald Trump       943169   1769443         489371
# Others             160349    233715          36258


fig = plt.figure(
    FigureClass=Waffle,
    plots={
        '311': {
            'values': data['Virginia'] / 30000,
            'labels': [f"{k} ({v})" for k, v in data['Virginia'].items()],
            'legend': {'loc': 'upper left', 'bbox_to_anchor': (1.05, 1), 'fontsize': 8},
            'title': {'label': '2016 Virginia Presidential Election Results', 'loc': 'left'}
        },
        '312': {
            'values': data['Maryland'] / 30000,
            'labels': [f"{k} ({v})" for k, v in data['Maryland'].items()],
            'legend': {'loc': 'upper left', 'bbox_to_anchor': (1.2, 1), 'fontsize': 8},
            'title': {'label': '2016 Maryland Presidential Election Results', 'loc': 'left'}
        },
        '313': {
            'values': data['West Virginia'] / 30000,
            'labels': [f"{k} ({v})" for k, v in data['West Virginia'].items()],
            'legend': {'loc': 'upper left', 'bbox_to_anchor': (1.3, 1), 'fontsize': 8},
            'title': {'label': '2016 West Virginia Presidential Election Results', 'loc': 'left'}
        },
    },
    rows=5,  # outside parameter applied to all subplots
    colors=["#2196f3", "#ff5252", "#999999"],  # outside parameter applied to all subplots
    figsize=(9, 5)
)
plt.show()

In this chart, 1 block = 30000 votes.

_{Data source https://en.wikipedia.org/wiki/United_States_presidential_election,_2016.}

Demo

Wanna try it yourself? There is Online Demo!

What's New

See CHANGELOG

License

• PyWaffle is under MIT license, see LICENSE file for the details.
• The Font Awesome font is licensed under the SIL OFL 1.1: http://scripts.sil.org/OFL