Hi, I get unexpected behaviour using the script below.  xticks only appear in
the 4th subplot.  If the lines marked ### are moved out of the loop (and edited
so that they are constants), then xticks do appear on each subplot.  Is this a
bug or am I missing something?

I am using matplotlib 1.1.0svn.

Many thanks, Evan


import numpy as np
import datetime as dt
import matplotlib.dates as dates
import matplotlib.pyplot as plt

months    = dates.MonthLocator(range(1,13), bymonthday=1, interval=1)
monthsFmt = dates.DateFormatter("%b %Y")
deltad   = 2
delta    = dt.timedelta(days=deltad)


plt.close('all')
fig1 = plt.figure(1)
for i in range(4):
    date_str = dt.date(i+2,11,1) ###
    date_end = dt.date(i+3,3,1) ###
    date_range = dates.drange(date_str,date_end,delta) ###
    ax = fig1.add_subplot(2,2,i+1)
    ax.plot_date(date_range,np.sin(date_range))
    ax.xaxis.set_major_locator(months)
    ax.xaxis.set_major_formatter(monthsFmt)

plt.show()





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