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chasinglogic/ex.py

Created December 24, 2018 03:02
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ex.py
import matplotlib
import matplotlib.pyplot
import scipy
import scipy.signal
from numpy import pi
[b,a] = scipy.signal.butter(2,1,analog=1)
zp = scipy.signal.freqz(b, a)
matplotlib.pyplot.plot(zp)
matplotlib.pyplot.xlim([0, pi])
matplotlib.pyplot.ylim([0, 2])
matplotlib.pyplot.show()
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