def setUp(self):
# Data for test 1,2,3
zt = np.array((1, 2, 3))
pt = np.array((1 + 2e-5, 2 + .5e-5, 3))
kt = 2
zpkt = (zt, pt, kt)
self.zr, self.pr, self.kr = ds.cancelPZ(zpkt, tol=1e-5)
# Data for test 4
ntf_test = (np.array([ 1. +1.49011612e-08j]), np.array([ 1.+0.j]), 1.0)
self.test4 = ds.cancelPZ(ntf_test)
def zpk_multiply(a, b):
za, pa, ka = ds._utils._get_zpk(a)
zb, pb, kb = ds._utils._get_zpk(b)
pa = pa.tolist() if hasattr(pa, 'tolist') else pa
pb = pb.tolist() if hasattr(pb, 'tolist') else pb
za = za.tolist() if hasattr(za, 'tolist') else za
zb = zb.tolist() if hasattr(zb, 'tolist') else zb
return ds.cancelPZ((za+zb, pa+pb, ka*kb))
def setUp(self):
zt = np.array((1, 2, 3))
pt = np.array((1 + 2e-5, 2 + .5e-5, 3))
kt = 2
zpkt = (zt, pt, kt)
self.zr, self.pr, self.kr = ds.cancelPZ(zpkt, tol=1e-5)