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Fix float indices in Spectrum demo #427

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Merged
rkern merged 1 commit into from
Oct 30, 2018
Merged

Fix float indices in Spectrum demo #427

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6 changes: 3 additions & 3 deletions examples/demo/advanced/spectrum.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ def _create_plot_component(obj):
# Setup the spectrum plot
frequencies = linspace(0.0, float(SAMPLING_RATE)/2, num=NUM_SAMPLES/2)
obj.spectrum_data = ArrayPlotData(frequency=frequencies)
empty_amplitude = zeros(NUM_SAMPLES/2)
empty_amplitude = zeros(NUM_SAMPLES//2)
obj.spectrum_data.set_data('amplitude', empty_amplitude)

obj.spectrum_plot = Plot(obj.spectrum_data)
Expand Down Expand Up @@ -69,7 +69,7 @@ def _create_plot_component(obj):
time_range.high = 0.2

# Spectrogram plot
spectrogram_data = zeros(( NUM_SAMPLES/2, SPECTROGRAM_LENGTH))
spectrogram_data = zeros(( NUM_SAMPLES//2, SPECTROGRAM_LENGTH))
obj.spectrogram_plotdata = ArrayPlotData()
obj.spectrogram_plotdata.set_data('imagedata', spectrogram_data)
spectrogram_plot = Plot(obj.spectrogram_plotdata)
Expand Down Expand Up @@ -112,7 +112,7 @@ def get_audio_data():
_stream.close()
_stream = None
normalized_data = audio_data / 32768.0
return (abs(fft(normalized_data))[:NUM_SAMPLES/2], normalized_data)
return (abs(fft(normalized_data))[:NUM_SAMPLES//2], normalized_data)


# HasTraits class that supplies the callable for the timer event.
Expand Down