Merge pull request matplotlib#4882 from ericmjl/masked_demo.py_mep12

mep12 on masked_demo.py

Author: dopplershift

examples/pylab_examples/masked_demo.py

@@ -1,26 +1,26 @@
-#!/usr/bin/env python
 '''
 Plot lines with points masked out.
 
 This would typically be used with gappy data, to
 break the line at the data gaps.
 '''
 
-from pylab import *
+import matplotlib.pyplot as plt
+import numpy as np
 
-x = ma.arange(0, 2*pi, 0.02)
-y = ma.sin(x)
-y1 = sin(2*x)
-y2 = sin(3*x)
-ym1 = ma.masked_where(y1 > 0.5, y1)
-ym2 = ma.masked_where(y2 < -0.5, y2)
+x = np.arange(0, 2*np.pi, 0.02)
+y = np.sin(x)
+y1 = np.sin(2*x)
+y2 = np.sin(3*x)
+ym1 = np.ma.masked_where(y1 > 0.5, y1)
+ym2 = np.ma.masked_where(y2 < -0.5, y2)
 
-lines = plot(x, y, 'r', x, ym1, 'g', x, ym2, 'bo')
-setp(lines[0], linewidth=4)
-setp(lines[1], linewidth=2)
-setp(lines[2], markersize=10)
+lines = plt.plot(x, y, 'r', x, ym1, 'g', x, ym2, 'bo')
+plt.setp(lines[0], linewidth=4)
+plt.setp(lines[1], linewidth=2)
+plt.setp(lines[2], markersize=10)
 
-legend(('No mask', 'Masked if > 0.5', 'Masked if < -0.5'),
-       loc='upper right')
-title('Masked line demo')
-show()
+plt.legend(('No mask', 'Masked if > 0.5', 'Masked if < -0.5'),
+           loc='upper right')
+plt.title('Masked line demo')
+plt.show()