Charting a pandas DataFrame with Matplotlib

The pandas library provides plotting capabilities for Series and DataFrame objects using Matplotlib.

Let's create a pandas DataFrame with the Cont value containing continuous values that mimic prices and the Delta1 and Delta2 values to mimic price changes. The Cat value contains categorical data from five possibilities:

import pandas as pd
df = pd.DataFrame(index=range(1000), 
                  columns=['Cont value', 'Delta1 value', 
                           'Delta2 value', 'Cat value'])
df['Cont value'] = np.random.randn(1000).cumsum()
df['Delta1 value'] = np.random.randn(1000)
df['Delta2 value'] = np.random.randn(1000)
df['Cat value...