Make animated bar and line chart races in Python with matplotlib or plotly.
Visit the bar_chart_race official documentation for detailed usage instructions.
Install with either:
pip install bar_chart_raceconda install -c conda-forge bar_chart_race
Must begin with a pandas DataFrame containing 'wide' data where:
- Every row represents a single period of time
- Each column holds the value for a particular category
- The index contains the time component (optional)
The data below is an example of properly formatted data. It shows total deaths from COVID-19 for several countries by date.
There are three core functions available to construct the animations.
bar_chart_racebar_chart_race_plotlyline_chart_race
The above animation was created with the help of matplotlib using the following call to bar_chart_race.
import bar_chart_race as bcr
df = bcr.load_dataset('covid19_tutorial')
bcr.bar_chart_race(
df=df,
filename='../docs/images/covid19_horiz.gif',
orientation='h',
sort='desc',
n_bars=8,
fixed_order=False,
fixed_max=True,
steps_per_period=20,
period_length=500,
end_period_pause=0,
interpolate_period=False,
period_label={'x': .98, 'y': .3, 'ha': 'right', 'va': 'center'},
period_template='%B %d, %Y',
period_summary_func=lambda v, r: {'x': .98, 'y': .2,
's': f'Total deaths: {v.sum():,.0f}',
'ha': 'right', 'size': 11},
perpendicular_bar_func='median',
colors='dark12',
title='COVID-19 Deaths by Country',
bar_size=.95,
bar_textposition='inside',
bar_texttemplate='{x:,.0f}',
bar_label_font=7,
tick_label_font=7,
tick_template='{x:,.0f}',
shared_fontdict=None,
scale='linear',
fig=None,
writer=None,
bar_kwargs={'alpha': .7},
fig_kwargs={'figsize': (6, 3.5), 'dpi': 144},
filter_column_colors=False) If you are working within a Jupyter Notebook, leave the filename as None and it will be automatically embedded into a Jupyter Notebook.
bcr.bar_chart_race(df=df, filename=None)
There are many options to customize the bar chart race to get the animation you desire. Below, we have an animation where the maximum x-value and order of the bars are set for the entire duration. A custom summary label and perpendicular bar of the median is also added.
def period_summary(values, ranks):
top2 = values.nlargest(2)
leader = top2.index[0]
lead = top2.iloc[0] - top2.iloc[1]
s = f'{leader} by {lead:.0f}'
return {'s': s, 'x': .99, 'y': .03, 'ha': 'right', 'size': 8}
df_baseball = bcr.load_dataset('baseball').pivot(index='year',
columns='name',
values='hr')
df_baseball.bcr.bar_chart_race(
period_length=1000,
fixed_max=True,
fixed_order=True,
n_bars=10,
period_summary_func=period_summary,
period_label={'x': .99, 'y': .1},
period_template='Season {x:,.0f}',
title='Top 10 Home Run Hitters by Season Played')