Consider the following code:
col_indices = pd.MultiIndex.from_product([[1,2], ['a', 'b']])
row_indices = [1,2,3]
df = pd.DataFrame(index=row_indices, columns=col_indices)
When I plot this, I get five legend entries including one which says None, None:
Why is this, and how can I get rid of it?
Option 1
You can remove it putting:
df.columns.names = ['', '']
Or if you would like something to appear there:
df.columns.names = ['name1', 'name2']
The labels are the names of the levels of the multiindex of the DataFrame.
Option 2
add:
plt.legend()
after the plotting command. You need to have "import matplotlib.pyplot as plt" at the top of code.
