#!/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 *
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, 11, 1 )
# every monday
mondays = WeekdayLocator(MONDAY)
# every second month
months = MonthLocator(range(1,13,2), bymonthday=1)
monthsFmt = DateFormatter('%b %d')
quotes = quotes_historical_yahoo('INTC', date1, date2)
if not quotes:
print 'Found no quotes'
raise SystemExit
dates = [q[0] for q in quotes]
opens = [q[1] for q in quotes]
ax = subplot(111)
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')
labels = ax.get_xticklabels()
setp(labels, rotation=30, fontsize=9)
grid(True)
savefig('date_demo2')
show()
