28 lines
805 B
Python
Executable file
28 lines
805 B
Python
Executable file
#!/usr/bin/env python3
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import sys
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import numpy as np
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import matplotlib.pyplot as pp
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with open(sys.argv[1], 'rb') as infile:
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header = infile.read(4)
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if header != b'CPX_':
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print(f"Error: not a complex signal file. Format {header} not implemented yet.")
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exit(1)
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T = np.fromfile(infile, dtype=np.float32, count=1)
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data = np.fromfile(infile, dtype=np.complex64)
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pp.plot(np.real(data), np.imag(data), 'x')
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a = np.linspace(-np.pi, np.pi, 200)
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pp.plot(np.cos(a), np.sin(a), 'k--', linewidth=0.7)
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pp.plot([1, 1, -1, -1, 1], [1, -1, -1, 1, 1], 'k--', linewidth=0.7)
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pp.plot([-1.5, 1.5], [0, 0], 'k--', linewidth=0.7)
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pp.plot([0, 0], [-1.5, 1.5], 'k--', linewidth=0.7)
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pp.xlim([-1.5, 1.5])
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pp.ylim([-1.5, 1.5])
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pp.axis('equal')
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pp.show()
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