def plot_shifted(wave, shift=0.002, start=0.2):
thinkplot.preplot(num=2)
segment1 = wave.segment(start=start, duration=0.01)
segment1.plot(linewidth=2, alpha=0.8)
segment2 = wave.segment(start=start-shift, duration=0.01)
segment2.plot(linewidth=2, alpha=0.4)
corr = segment1.corr(segment2)
text = r'$\rho =$ %.2g' % corr
thinkplot.text(0.0005, -0.8, text)
def plot_shifted(wave, offset=0.001, start=0.2):
thinkplot.preplot(2)
segment1 = wave.segment(start=start, duration=0.01)
segment1.plot(linewidth=2, alpha=0.8)
# start earlier and then shift times to line up
segment2 = wave.segment(start=start-offset, duration=0.01)
segment2.shift(offset)
segment2.plot(linewidth=2, alpha=0.4)
corr = segment1.corr(segment2)
text = r'$\rho =$ %.2g' % corr
thinkplot.text(segment1.start+0.0005, -0.8, text)
thinkplot.config(xlabel='Time (s)', xlim=[start, start+duration], ylim=[-1, 1])
def plot_shifted(wave, shift=0.002, start=0.2):
"""Plots two segments of a wave with different start times.
wave: Wave
shift: difference in start time (seconds)
start: start time in seconds
"""
thinkplot.preplot(num=2)
segment1 = wave.segment(start=start, duration=0.01)
segment1.plot(linewidth=2, alpha=0.8)
segment2 = wave.segment(start=start - shift, duration=0.01)
segment2.plot(linewidth=2, alpha=0.4)
corr = segment1.corr(segment2)
text = r'$\rho =$ %.2g' % corr
thinkplot.text(0.0005, -0.8, text)
thinkplot.config(xlabel='time (s)', ylim=[-1, 1])
def plot_shifted(wave, shift=0.002, start=0.2):
"""Plots two segments of a wave with different start times.
wave: Wave
shift: difference in start time (seconds)
start: start time in seconds
"""
thinkplot.preplot(num=2)
segment1 = wave.segment(start=start, duration=0.01)
segment1.plot(linewidth=2, alpha=0.8)
segment2 = wave.segment(start=start-shift, duration=0.01)
segment2.plot(linewidth=2, alpha=0.4)
corr = segment1.corr(segment2)
text = r'$\rho =$ %.2g' % corr
thinkplot.text(0.0005, -0.8, text)
thinkplot.config(xlabel='time (s)', ylim=[-1, 1])