How To Create An Interactive Population Pyramid in Python Using Plotly
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In this tutorial, I will show you, how to create an interactive population pyramid in python by using the library “Plotly”.
📝 Resources:
Download the Python Code and files used in the tutorial here:
Download Here
Population Pyramid Data: https://www.populationpyramid.net/japan/1950/
Population Pyramid “X-Mas”-Edition: http://xmas-sven.herokuapp.com/
👩💻 Source Code:
import pandas as pd
import plotly.graph_objs as go
import plotly # To export chart to HTML
# CSV VERSION
# df = pd.read_csv('Japan-1950.csv')
# EXCEL VERSION --> Need to install openpyxl: pip install openpyxl
df = pd.read_excel('Japan-1950.xlsx')
y = df['Age']
x1 = df['M']
x2 = df['F'] * -1
# Create instance of the figure
fig = go.Figure()
# Add Trace to Figure
fig.add_trace(go.Bar(
y=y,
x=x1,
name='Male',
orientation='h'
))
# Add Trace to figure
fig.add_trace(go.Bar(
y=y,
x=x2,
name='Female',
orientation='h'
))
# Update Figure Layout
fig.update_layout(
template = 'plotly_white',
title= 'Age Pyramid Japan 1950',
title_font_size = 24,
barmode='relative',
bargap=0.0,
bargroupgap=0,
xaxis=dict(
tickvals=[-4000000,-2000000,0,2000000,4000000],
ticktext=['4M','2M','0','2M','4M'],
title='Population in Mio',
title_font_size=14
)
)
# Plot figure
fig.show()
# Export Candlestick to HTML
plotly.offline.plot(fig, filename='population_pyramid.html')