源：DataCamp
气泡的大小表示人口的多少，横坐标表示人均GDP（美元），纵坐标表示预期寿命。-- 作者：Hans Rosling
Python 中有许许多多用于可视化的包，而 matplotlib 是它们的源头。
我们需要用到的是它的子包 pyplot ，通常它被简写成 plt 导入
1、Line plot
# Print the last item from year and pop print(year[-1]) print(pop[-1]) # Import matplotlib.pyplot as plt import matplotlib.pyplot as plt # Make a line plot: year on the x-axis, pop on the y-axis plt.plot(year, pop) # Display the plot with plt.show() plt.show()
# Print the last item of gdp_cap and life_exp print(gdp_cap[-1]) print(life_exp[-1]) # Make a line plot, gdp_cap on the x-axis, life_exp on the y-axis plt.plot(gdp_cap, life_exp) # Display the plot plt.show()
2、Scatter Plot
When you have a time scale along the horizontal axis, the line plot is your friend. But in many other cases, when you're trying to assess if there's a correlation between two variables, for example, the scatter plot is the better choice. Below is an example of how to build a scatter plot.
# Change the line plot below to a scatter plot plt.scatter(gdp_cap, life_exp) # Put the x-axis on a logarithmic scale plt.xscale('log') # Show plot plt.show()
# Import package import matplotlib.pyplot as plt # Build Scatter plot plt.scatter(pop, life_exp) # Show plot plt.show()