#!/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
"""
from __future__ import print_function
import datetime
from pylab import figure, show
from matplotlib.dates import MONDAY
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()