29 lines
651 B
Python
29 lines
651 B
Python
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#!/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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T = np.fromfile(infile, dtype=np.float32, count=1)
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data = np.fromfile(infile, dtype=np.complex64)
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else:
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print(f"Error: Format {header} not implemented yet.")
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exit(1)
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t = np.arange(0, T*data.size, T)
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amp = np.absolute(data)
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phase = np.angle(data)
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pp.plot(t, amp, 'r-')
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pp.legend(['Amplitude'])
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pp.twinx()
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pp.plot(t, phase, 'b-')
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pp.legend(['Phase [radians]'])
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pp.xlabel('Time [s]')
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pp.show()
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