.. _pylab_examples-date_demo2:

pylab_examples example code: date_demo2.py
==========================================



.. plot:: /home/mandrake/rpm/BUILD/matplotlib-1.1.1/doc/mpl_examples/pylab_examples/date_demo2.py

::

    #!/usr/bin/env python
    """
    Show how to make date plots in matplotlib using date tick locators and
    formatters.  See major_minor_demo1.py for more information on
    controlling major and minor ticks
    """
    import datetime
    from pylab import figure, show
    from matplotlib.dates import MONDAY, SATURDAY
    from matplotlib.finance import quotes_historical_yahoo
    from matplotlib.dates import MonthLocator, WeekdayLocator, DateFormatter
    
    
    date1 = datetime.date( 2002, 1, 5 )
    date2 = datetime.date( 2003, 12, 1 )
    
    # every monday
    mondays   = WeekdayLocator(MONDAY)
    
    # every 3rd month
    months    = MonthLocator(range(1,13), bymonthday=1, interval=3)
    monthsFmt = DateFormatter("%b '%y")
    
    
    quotes = quotes_historical_yahoo('INTC', date1, date2)
    if len(quotes) == 0:
        print 'Found no quotes'
        raise SystemExit
    
    dates = [q[0] for q in quotes]
    opens = [q[1] for q in quotes]
    
    fig = figure()
    ax = fig.add_subplot(111)
    ax.plot_date(dates, opens, '-')
    ax.xaxis.set_major_locator(months)
    ax.xaxis.set_major_formatter(monthsFmt)
    ax.xaxis.set_minor_locator(mondays)
    ax.autoscale_view()
    #ax.xaxis.grid(False, 'major')
    #ax.xaxis.grid(True, 'minor')
    ax.grid(True)
    
    fig.autofmt_xdate()
    
    show()
    

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