.. _sphx_glr_gallery_api_barchart.py:


========
Barchart
========

A bar plot with errorbars and height labels on individual bars.




.. image:: /gallery/api/images/sphx_glr_barchart_001.png
    :align: center





.. code-block:: python

    import numpy as np
    import matplotlib.pyplot as plt

    men_means, men_std = (20, 35, 30, 35, 27), (2, 3, 4, 1, 2)
    women_means, women_std = (25, 32, 34, 20, 25), (3, 5, 2, 3, 3)

    ind = np.arange(len(men_means))  # the x locations for the groups
    width = 0.35  # the width of the bars

    fig, ax = plt.subplots()
    rects1 = ax.bar(ind - width/2, men_means, width, yerr=men_std,
                    color='SkyBlue', label='Men')
    rects2 = ax.bar(ind + width/2, women_means, width, yerr=women_std,
                    color='IndianRed', label='Women')

    # Add some text for labels, title and custom x-axis tick labels, etc.
    ax.set_ylabel('Scores')
    ax.set_title('Scores by group and gender')
    ax.set_xticks(ind)
    ax.set_xticklabels(('G1', 'G2', 'G3', 'G4', 'G5'))
    ax.legend()


    def autolabel(rects, xpos='center'):
        """
        Attach a text label above each bar in *rects*, displaying its height.

        *xpos* indicates which side to place the text w.r.t. the center of
        the bar. It can be one of the following {'center', 'right', 'left'}.
        """

        xpos = xpos.lower()  # normalize the case of the parameter
        ha = {'center': 'center', 'right': 'left', 'left': 'right'}
        offset = {'center': 0.5, 'right': 0.57, 'left': 0.43}  # x_txt = x + w*off

        for rect in rects:
            height = rect.get_height()
            ax.text(rect.get_x() + rect.get_width()*offset[xpos], 1.01*height,
                    '{}'.format(height), ha=ha[xpos], va='bottom')


    autolabel(rects1, "left")
    autolabel(rects2, "right")

    plt.show()



.. only :: html

 .. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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


.. only:: html

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

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