.. note::
    :class: sphx-glr-download-link-note

    Click :ref:`here <sphx_glr_download_gallery_api_two_scales.py>` to download the full example code
.. rst-class:: sphx-glr-example-title

.. _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
    :class: sphx-glr-single-img





.. 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()


.. _sphx_glr_download_gallery_api_two_scales.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example



  .. container:: sphx-glr-download

     :download:`Download Python source code: two_scales.py <two_scales.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: two_scales.ipynb <two_scales.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    Keywords: matplotlib code example, codex, python plot, pyplot
    `Gallery generated by Sphinx-Gallery
    <https://sphinx-gallery.readthedocs.io>`_
