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

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

.. _sphx_glr_intro_scipy_auto_examples_plot_detrend.py:


===================
Detrending a signal
===================

:func:`scipy.signal.detrend` removes a linear trend.


Generate a random signal with a trend



.. code-block:: python

    import numpy as np
    t = np.linspace(0, 5, 100)
    x = t + np.random.normal(size=100)







Detrend



.. code-block:: python

    from scipy import signal
    x_detrended = signal.detrend(x)







Plot



.. code-block:: python

    from matplotlib import pyplot as plt
    plt.figure(figsize=(5, 4))
    plt.plot(t, x, label="x")
    plt.plot(t, x_detrended, label="x_detrended")
    plt.legend(loc='best')
    plt.show()



.. image:: /intro/scipy/auto_examples/images/sphx_glr_plot_detrend_001.png
    :class: sphx-glr-single-img




**Total running time of the script:** ( 0 minutes  0.168 seconds)


.. _sphx_glr_download_intro_scipy_auto_examples_plot_detrend.py:


.. only :: html

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



  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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


.. only:: html

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

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_