.. _pylab_examples-major_minor_demo2:

pylab_examples example code: major_minor_demo2.py
=================================================



.. plot:: /home/tcaswell/source/p/matplotlib/doc/mpl_examples/pylab_examples/major_minor_demo2.py

::

    """
    Automatic tick selection for major and minor ticks.
    
    Use interactive pan and zoom to see how the tick intervals
    change. There will be either 4 or 5 minor tick intervals
    per major interval, depending on the major interval.
    """
    
    import numpy as np
    import matplotlib.pyplot as plt
    from matplotlib.ticker import AutoMinorLocator
    
    # One can supply an argument to AutoMinorLocator to
    # specify a fixed number of minor intervals per major interval, e.g.:
    # minorLocator = AutoMinorLocator(2)
    # would lead to a single minor tick between major ticks.
    
    minorLocator = AutoMinorLocator()
    
    
    t = np.arange(0.0, 100.0, 0.01)
    s = np.sin(2*np.pi*t)*np.exp(-t*0.01)
    
    fig, ax = plt.subplots()
    plt.plot(t, s)
    
    ax.xaxis.set_minor_locator(minorLocator)
    
    plt.tick_params(which='both', width=2)
    plt.tick_params(which='major', length=7)
    plt.tick_params(which='minor', length=4, color='r')
    
    plt.show()
    

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