Horizontal Bar Chart

Horizontal bar charts are the same as bar charts, but have axes 'swapped': this time bars are horizontal, and values are labeled on the x-axis.

To build horizontal bar chart. use the .barh() function. This function can also be used to build stacked bars, but this time instead of the bottom parameter we should use the left parameter, and instead of width we should use height. For example, we can rebuild the stacked bar chart from example as a horizontal one:


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# Import library
import matplotlib.pyplot as plt

# Create data for chart
countries = ['United States', 'India', 'Brazil']
agricultural = [333600, 1458996, 214368]
industrial = [3722590, 2179020, 672336]
services = [15592000, 5826510, 2361296]

# Create Axes and Figure objects
fig, ax = plt.subplots()

# Initialize bar chart
ax.barh(countries, agricultural, label = 'Agricultural', height = 0.4)
ax.barh(countries, industrial, label = 'Industrial', left = agricultural, height = 0.4)
ax.barh(countries, services, label = 'Services', left = industrial, height = 0.4)

# Display the plot
plt.legend()
plt.show()

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Seção 2. Capítulo 7