.. _sphx_glr_gallery_api_two_scales.py: =========================== Plots with different scales =========================== Demonstrate how to do two plots on the same axes with different left and right scales. The trick is to use *two different axes* that share the same *x* axis. You can use separate `matplotlib.ticker` formatters and locators as desired since the two axes are independent. Such axes are generated by calling the `Axes.twinx` method. Likewise, `Axes.twiny` is available to generate axes that share a *y* axis but have different top and bottom scales. .. image:: /gallery/api/images/sphx_glr_two_scales_001.png :align: center .. code-block:: python import numpy as np import matplotlib.pyplot as plt # Create some mock data t = np.arange(0.01, 10.0, 0.01) data1 = np.exp(t) data2 = np.sin(2 * np.pi * t) fig, ax1 = plt.subplots() color = 'tab:red' ax1.set_xlabel('time (s)') ax1.set_ylabel('exp', color=color) ax1.plot(t, data1, color=color) ax1.tick_params(axis='y', labelcolor=color) ax2 = ax1.twinx() # instantiate a second axes that shares the same x-axis color = 'tab:blue' ax2.set_ylabel('sin', color=color) # we already handled the x-label with ax1 ax2.plot(t, data2, color=color) ax2.tick_params(axis='y', labelcolor=color) fig.tight_layout() # otherwise the right y-label is slightly clipped plt.show() .. only :: html .. container:: sphx-glr-footer .. container:: sphx-glr-download :download:`Download Python source code: two_scales.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: two_scales.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_