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1 #!/usr/bin/python |
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2 # 4.3 |
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3 |
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4 import pylab as pl |
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5 |
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6 z = pl.array([[0],[5./12]]) |
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7 p = pl.array([[1./2],[1./3]]) |
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8 |
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9 def zplane(z, p): |
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10 pl.figure(figsize=(8,8)) |
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11 x = pl.linspace(-1.5, 1.5) |
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12 pl.plot(pl.zeros_like(x), x, 'b.', x, pl.zeros_like(x), 'b.', markersize=2) |
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13 x = pl.linspace(0, 2*pl.pi, 100) |
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14 pl.plot(pl.cos(x), pl.sin(x), 'b.', markersize=2) |
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15 pl.plot(z, pl.zeros_like(z), 'ro', p, pl.zeros_like(p), 'rx', markersize=8) |
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16 pl.xlabel('Real part') |
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17 pl.ylabel('Imaginary part') |
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18 |
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19 zplane(z, p) |
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20 |
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21 pl.show() |