def plot_signal(self, signal, num=None, figsize=(6.5, 4.5), **pkwargs):
'''
Creates the signal-figure and plots the signal.
Parameters
----------
signal : a sequence
num : int
The number of the figure to be created
figsize : tuple
the size of the signal axis in inches (x,y)
**pkwargs : keyword arguments for the matlotlib `plot`
call, e.g. marker='o', lw=3, color='red'
'''
# create plotting style dictionary from defaults
# and potentially overwrite with the arguments of **pkwargs
style_dic = dict(pl.SIGNAL_STYLE, **pkwargs)
if num or self.ax_signal is None:
fig = ppl.figure(num, figsize=figsize)
self.ax_signal = pl.mk_signal_ax(self.time_unit_label, fig=fig)
tvec = np.arange(len(signal)) * self.dt
self.ax_signal.plot(tvec, signal, **style_dic)
if 'label' in style_dic:
self.ax_signal.legend(fontsize=pl.tick_label_size, ncol=2)
ymin, ymax = self.ax_signal.get_ylim()
self.ax_signal.set_ylim((ymin, 1.2 * ymax))
fig = ppl.gcf()
# fig.subplots_adjust(bottom=0.18)
fig.tight_layout()
def plot_envelope(self, signal, legend=False, num=None):
'''
Sliding window amplitude envelope
'''
if self.L is None:
print('Set a window size for the sliding window first!')
return
if self.ax_signal is None:
fig = ppl.figure(num, figsize=(6, 3.5))
self.ax_signal = pl.mk_signal_ax(self.time_unit_label, fig=fig)
tvec = np.arange(len(signal)) * self.dt
envelope = self.get_envelope(signal, self.L)
pl.draw_envelope(self.ax_signal, tvec, envelope)
if legend:
self.ax_signal.legend(fontsize=pl.label_size, ncol=3)
ymin, ymax = self.ax_signal.get_ylim()
self.ax_signal.set_ylim((ymin, 1.3 * ymax))
fig = ppl.gcf()
fig.subplots_adjust(bottom=0.18)
fig.tight_layout()
def plot_signal(self, signal, legend=False, num=None):
if self.ax_signal is None:
self.ax_signal = pl.mk_signal_ax(self.time_unit_label)
tvec = np.arange(len(signal)) * self.dt
pl.draw_signal(self.ax_signal, tvec, signal)
if legend:
self.ax_signal.legend(fontsize=pl.label_size, ncol=3)
ymin, ymax = self.ax_signal.get_ylim()
self.ax_signal.set_ylim((ymin, 1.3 * ymax))
fig = ppl.gcf()
fig.subplots_adjust(bottom=0.18)
fig.tight_layout()
def plot_detrended(self, signal, legend=False, num=None):
if self.ax_signal is None:
fig = ppl.figure(num, figsize=(6, 3.5))
self.ax_signal = pl.mk_signal_ax(self.time_unit_label, fig=fig)
tvec = np.arange(len(signal)) * self.dt
trend = self.get_trend(signal)
pl.draw_detrended(self.ax_signal, tvec, signal - trend)
if legend:
# detrended lives on 2nd axis :/
pass
fig = ppl.gcf()
fig.subplots_adjust(bottom=0.18)
fig.tight_layout()
def doPlot(self):
'''
Checks the checkboxes for trend and envelope..
'''
# update raw_signal and tvec
succ = self.vector_prep(self.signal_id) # error handling done here
if not succ:
return False
if self.debug:
print(
"called Plotting [raw] [trend] [detrended] [envelope]",
self.cb_raw.isChecked(),
self.cb_trend.isChecked(),
self.cb_detrend.isChecked(),
self.cb_envelope.isChecked(),
)
# check if trend is needed
if self.cb_trend.isChecked() or self.cb_detrend.isChecked():
trend = self.calc_trend()
if trend is None:
return
else:
trend = None
# envelope calculation
if self.cb_envelope.isChecked():
envelope = self.calc_envelope()
if envelope is None:
return
else:
envelope = None
self.tsCanvas.fig1.clf()
ax1 = pl.mk_signal_ax(self.time_unit, fig=self.tsCanvas.fig1)
self.tsCanvas.fig1.add_axes(ax1)
if self.debug:
print(
f"plotting signal and trend with {self.tvec[:10]}, {self.raw_signal[:10]}"
)
if self.cb_raw.isChecked():
pl.draw_signal(ax1, time_vector=self.tvec, signal=self.raw_signal)
if trend is not None and self.cb_trend.isChecked():
pl.draw_trend(ax1, time_vector=self.tvec, trend=trend)
if trend is not None and self.cb_detrend.isChecked():
ax2 = pl.draw_detrended(
ax1, time_vector=self.tvec, detrended=self.raw_signal - trend
)
ax2.legend(fontsize=pl.tick_label_size)
if envelope is not None and not self.cb_detrend.isChecked():
pl.draw_envelope(ax1, time_vector=self.tvec, envelope=envelope)
# plot on detrended axis
if envelope is not None and self.cb_detrend.isChecked():
pl.draw_envelope(ax2, time_vector=self.tvec, envelope=envelope)
ax2.legend(fontsize=pl.tick_label_size)
self.tsCanvas.fig1.subplots_adjust(bottom=0.15, left=0.15, right=0.85)
# add a simple legend
ax1.legend(fontsize=pl.tick_label_size)
self.tsCanvas.draw()
self.tsCanvas.show()
alpha=alpha) # add slower oscillatory trend signal2 = ssg.create_chirp(T1=70 / dt, T2=70 / dt, Nt=Nt) # linear superposition signal = signal1 + 1.5 * signal2 # --- calculate trend --- trend = pyboat.sinc_smooth(signal, T_cut_off, dt) detr_signal = signal - trend # plot the signal/trend tvec = np.arange(len(signal)) * dt ax = pl.mk_signal_ax(time_unit='s') pl.draw_signal(ax, tvec, signal) # pl.draw_detrended(ax, tvec, signal) pl.draw_trend(ax, tvec, trend) ppl.legend(ncol=2) ppl.tight_layout() # --- compute spectrum on the original signal --- modulus, wlet = pyboat.compute_spectrum(signal, dt, periods) # plot spectrum and ridge ax_sig, ax_spec = pl.mk_signal_modulus_ax(time_unit) pl.plot_signal_modulus((ax_sig, ax_spec), tvec, signal, modulus, periods) # --- compute spectrum on the detrended signal --- modulus, wlet = pyboat.compute_spectrum(detr_signal, dt, periods)
def doPlot(self):
if self.raw_signal is None:
self.NoSignal = MessageWindow("Please create a signal first!",
"No Signal")
if self.debug:
print(
"called Plotting [raw] [trend] [detrended] [envelope]",
self.cb_raw.isChecked(),
self.cb_trend.isChecked(),
self.cb_detrend.isChecked(),
self.cb_envelope.isChecked(),
)
# check if trend is needed
if self.T_c and (self.cb_trend.isChecked()
or self.cb_detrend.isChecked()):
if self.debug:
print("Calculating trend with T_c = ", self.T_c)
trend = self.calc_trend()
else:
trend = None
# envelope calculation
if self.L and self.cb_envelope.isChecked():
if self.debug:
print("Calculating envelope with L = ", self.L)
envelope = self.calc_envelope()
else:
envelope = None
self.tsCanvas.fig1.clf()
ax1 = pl.mk_signal_ax(self.time_unit, fig=self.tsCanvas.fig1)
self.tsCanvas.fig1.add_axes(ax1)
if self.debug:
print(
f"plotting signal and trend with {self.tvec[:10]}, {self.raw_signal[:10]}"
)
if self.cb_raw.isChecked():
pl.draw_signal(ax1, time_vector=self.tvec, signal=self.raw_signal)
if trend is not None and self.cb_trend.isChecked():
pl.draw_trend(ax1, time_vector=self.tvec, trend=trend)
if trend is not None and self.cb_detrend.isChecked():
ax2 = pl.draw_detrended(ax1,
time_vector=self.tvec,
detrended=self.raw_signal - trend)
ax2.legend(fontsize=pl.tick_label_size)
if envelope is not None and not self.cb_detrend.isChecked():
pl.draw_envelope(ax1, time_vector=self.tvec, envelope=envelope)
# plot on detrended axis
if envelope is not None and self.cb_detrend.isChecked():
pl.draw_envelope(ax2, time_vector=self.tvec, envelope=envelope)
ax2.legend(fontsize=pl.tick_label_size)
self.tsCanvas.fig1.subplots_adjust(bottom=0.15, left=0.15, right=0.85)
# add a simple legend
ax1.legend(fontsize=pl.tick_label_size)
self.tsCanvas.draw()
self.tsCanvas.show()