In [10]:
# Using a convenience function to do some quick
# interactive plotting
import numpy
from biggles import plot
x=numpy.linspace(0, 4*numpy.pi,50)
y=numpy.cos(x)*numpy.exp(-x/3)
noise=0.02
yerr = noise + numpy.zeros(x.size)
y += numpy.random.normal(scale=noise, size=y.size)
plot(x, y, yerr=yerr, color='firebrick')
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