Python: plots(2)

Abstract: graph histogram plots using matplotlib

The script:

# -*- coding: utf-8 -*-

"""

Created on Sun Jul 19 11:33:46 2015

@author: yuan

"""

import numpy as np

import matplotlib.pyplot as plt

#multiplot plots

fig=plt.figure()

p1=fig.add_subplot(3,2,1)

p2=fig.add_subplot(3,2,2)

p3=fig.add_subplot(3,2,3)

p4=fig.add_subplot(3,2,4)

p5=fig.add_subplot(3,2,5)

#p6=fig.add_subplot(3,2,6)

#histogram 1

m=np.random.randn(500).cumsum()

n=np.random.randn(500).cumsum()

#print m, range(len(m))

#

p1.hist(m, bins=25, color='green', alpha=0.3)

p1.set_xlabel('Values of andom numbers')

p1.set_ylabel('Frequency by counts')

p1.set_title('Histogram')

#

p2.hist(m, bins=25, color='green', alpha=0.3)

p2.set_xlim(-20,20)

p2.set_ylim(0,50)

p2.set_title('set xlim, ylim, and grid')

p2.grid(True)

#

p3.hist(m, bins=25, color='yellow', cumulative=True)

p3.set_title('cumulative is True')

#

p4.hist(m, color='yellow', bins=(-10,0,5,10,15, 20))

p4.hist(m, bins=25, histtype='step' )

p4.set_title('set bins and histtype')

#

p5.hist(m, bins=25, color='blue', alpha=0.3,label='m')

p5.hist(n, bins=25, color='red', alpha=0.3, label='n')

p5.legend()

p5.set_title('double histograms')

#

plt.show()