.. only:: html

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

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

    .. _sphx_glr_gallery_lines_bars_and_markers_errorbar_subsample.py:


==================
Errorbar Subsample
==================

Demo for the errorevery keyword to show data full accuracy data plots with
few errorbars.



.. image:: /gallery/lines_bars_and_markers/images/sphx_glr_errorbar_subsample_001.png
    :alt: Errorbar subsampling for better appearance, all errorbars, only every 6th errorbar, second series shifted by 3
    :class: sphx-glr-single-img






.. code-block:: default


    import numpy as np
    import matplotlib.pyplot as plt

    # example data
    x = np.arange(0.1, 4, 0.1)
    y1 = np.exp(-1.0 * x)
    y2 = np.exp(-0.5 * x)

    # example variable error bar values
    y1err = 0.1 + 0.1 * np.sqrt(x)
    y2err = 0.1 + 0.1 * np.sqrt(x/2)


    # Now switch to a more OO interface to exercise more features.
    fig, (ax_l, ax_c, ax_r) = plt.subplots(nrows=1, ncols=3,
                                           sharex=True, figsize=(12, 6))

    ax_l.set_title('all errorbars')
    ax_l.errorbar(x, y1, yerr=y1err)
    ax_l.errorbar(x, y2, yerr=y2err)

    ax_c.set_title('only every 6th errorbar')
    ax_c.errorbar(x, y1, yerr=y1err, errorevery=6)
    ax_c.errorbar(x, y2, yerr=y2err, errorevery=6)

    ax_r.set_title('second series shifted by 3')
    ax_r.errorbar(x, y1, yerr=y1err, errorevery=(0, 6))
    ax_r.errorbar(x, y2, yerr=y2err, errorevery=(3, 6))

    fig.suptitle('Errorbar subsampling for better appearance')
    plt.show()


.. _sphx_glr_download_gallery_lines_bars_and_markers_errorbar_subsample.py:


.. only :: html

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



  .. container:: sphx-glr-download sphx-glr-download-python

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



  .. container:: sphx-glr-download sphx-glr-download-jupyter

     :download:`Download Jupyter notebook: errorbar_subsample.ipynb <errorbar_subsample.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>`_