.. _pylab_examples-errorbar_subsample:

pylab_examples example code: errorbar_subsample.py
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.. plot:: /home/tcaswell/source/p/matplotlib/doc/mpl_examples/pylab_examples/errorbar_subsample.py

::

    '''
    Demo for the errorevery keyword to show data full accuracy data plots with
    few errorbars.
    '''
    
    import numpy as np
    import matplotlib.pyplot as plt
    
    # example data
    x = np.arange(0.1, 4, 0.1)
    y = np.exp(-x)
    
    # example variable error bar values
    yerr = 0.1 + 0.1*np.sqrt(x)
    
    
    # Now switch to a more OO interface to exercise more features.
    fig, axs = plt.subplots(nrows=1, ncols=2, sharex=True)
    ax = axs[0]
    ax.errorbar(x, y, yerr=yerr)
    ax.set_title('all errorbars')
    
    ax = axs[1]
    ax.errorbar(x, y, yerr=yerr, errorevery=5)
    ax.set_title('only every 5th errorbar')
    
    
    fig.suptitle('Errorbar subsampling for better appearance')
    
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)