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38 lines
892 B
Python
Executable File
38 lines
892 B
Python
Executable File
#!/usr/bin/env python
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import pylab
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import numpy as np
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def constellation(y, symbols, title):
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theta = np.linspace(0, 2*np.pi, 1000)
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pylab.plot(y.real, y.imag, '.')
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pylab.plot(np.cos(theta), np.sin(theta), ':')
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points = np.array(symbols)
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pylab.plot(points.real, points.imag, '+')
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pylab.grid('on')
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pylab.axis('equal')
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pylab.title(title)
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def spectrogram(t, x, Fs, NFFT=256):
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ax1 = pylab.subplot(211)
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pylab.plot(t, x)
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pylab.subplot(212, sharex=ax1)
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pylab.specgram(x, NFFT=NFFT, Fs=Fs, noverlap=NFFT/2,
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cmap=pylab.cm.gist_heat)
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if __name__ == '__main__':
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import sys
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import common
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from config import Fs, Ts
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for fname in sys.argv[1:]:
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x = common.load(open(fname, 'rb'))
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t = np.arange(len(x)) * Ts
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pylab.figure()
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pylab.title(fname)
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spectrogram(t, x, Fs)
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pylab.show()
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