Plotting directly using pandas

Python for R Users

Daniel Chen

Instructor

Plotting in Python

• Quickly show data patterns
• Plotting methods in Python:
  • pandas
  • Seaborn
  • Matplotlib

Pandas plot method

• plot() method
• Works on the pandas DataFrame and Series objects
• Pass plot the kind argument
• kind of plots:
  • line : line plot (default)
  • bar : vertical bar plot
  • barh : horizontal bar plot

• hist : histogram
• box : boxplot
• kde : Kernel Density Estimation plot
• density : same as ‘kde’
• area : area plot
• pie : pie plot
• scatter : scatter plot
• hexbin : hexbin plot

Univariate: Histogram

import matplotlib.pyplot as plt
iris['sepal_length'].plot(kind='hist')
plt.show()

Univariate: Bar plot

cts = iris['species'].value_counts()
cts.plot(kind='bar')
plt.show()

Bivariate: Scatter plot

iris.plot(kind='scatter', x='Sepal.Length', y='Sepal.Width')
plt.show()

Bivariate: Boxplots

iris.plot(kind='box')
plt.show()

Bivariate: Boxplots

iris.boxplot(by='Species', column='Sepal.Length')
plt.show()

Let's practice!

Python for R Users