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#!/usr/bin/env python
"""
Example: simple line plots with NaNs inserted.
"""
from pylab import *
import numpy as np
t = arange(0.0, 1.0+0.01, 0.01)
s = cos(2*2*pi*t)
t[41:60] = NaN
#t[50:60] = np.inf
subplot(2,1,1)
plot(t, s, '-', lw=2)
xlabel('time (s)')
ylabel('voltage (mV)')
title('A sine wave with a gap of NaNs between 0.4 and 0.6')
grid(True)
subplot(2,1,2)
t[0] = NaN
t[-1] = NaN
plot(t, s, '-', lw=2)
title('Also with NaN in first and last point')
xlabel('time (s)')
ylabel('more nans')
grid(True)
show()
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