Second y-axis label getting cut off


I’m trying to plot two sets of data in a bar graph with matplotlib, so I’m using two axes with the twinx() method. However, the second y-axis label gets cut off. I’ve tried a few different methods with no success (tight_layout(), setting the major_pads in rcParams, etc…). I feel like the solution is simple, but I haven’t come across it yet.

Here’s a MWE:

#!/usr/bin/env python
import numpy as np
import matplotlib
import matplotlib.pyplot as plt

matplotlib.rcParams.update({'font.size': 21})
ax = plt.gca()
plt.ylabel('Data1') #Left side
ax2 = ax.twinx()
for i in range(10):

plt.ylabel('Data2') #Right


Sample graph with Data2 cut off

Asked By: zje



I just figured it out: the trick is to use bbox_inches='tight' in savefig.

E.G. plt.savefig("test.png",bbox_inches='tight')

fixed now

Answered By: zje

I encountered the same issue which plt.tight_layout() did not automatically solve.
Instead, I used the labelpad argument in ylabel/set_ylabel as such:

ax.set_ylabel('label here', rotation=270, color='k', labelpad=15)

I guess this was not implemented when you asked this question, but as it’s the top result on google, hopefully it can help users of the current matplotlib version.

Answered By: Elliot
Categories: questions Tags: , ,
Answers are sorted by their score. The answer accepted by the question owner as the best is marked with
at the top-right corner.