water.py~

import csv
import numpy as np
import matplotlib.pyplot as plt

aReader = csv.reader(open('watertown.csv','rb'),delimiter=',')
aReader.next()
data = [[vixdate,float(vix)] for vixdate,vix in aReader]
darray = np.array(data)
belmont = darray[:,1].astype(float)
watertown = darray[:,0].astype(float)

# basic plot
# plt.boxplot(np.column_stack((watertown,belmont)))
# plt.text(1.9, 13000,'1 - Watertown',
#      verticalalignment='center')
# plt.text(1.9, 12000,'2 - Belmont',
#      verticalalignment='center')

plt.figure(1)
plt.subplot(211)
plt.hist(watertown)
plt.xlim((-2000,14000)
# plt.text(11000., 20,'1 - Watertown',
#      verticalalignment='center')
plt.subplot(212)
plt.hist(belmont)
plt.xlim((-2000,14000))
plt.show()
#savefig('box1')