def __init__(self):
super(SimplePlot, self).__init__()
# Set up the user interface from Designer.
self.gui = Ui_PlotTest()
self.gui.setupUi(self)
# Init local variables
self.scale = 1E-8
self.active = False
self.start = None
self.plot_length = 20
# Set up plot (using pretty much all the possible options)
self.plots_l = ['signal1', 'signal2']
self.plots_r = ['aux_signal1']
self.plotter = DataPlotter(
self.plots_l, right_plotlist=self.plots_r, parent=self,
left_log=True, title='Awesome plots',
yaxis_left_label='Log sine, cos', yaxis_right_label='Noisy line',
xaxis_label='Time since start [s]',
legend='right', left_thickness=[2, 8], right_thickness=6,
left_colors=['firebrick', 'darkolivegreen'],
right_colors=['darksalmon'])
self.gui.horizontalLayout.addWidget(self.plotter.plot)
# Make the content scale with the Window
self.setLayout(self.gui.horizontalLayout)
# Connect signals
QtCore.QObject.connect(self.gui.start_button,
QtCore.SIGNAL('clicked()'),
self.on_start)
QtCore.QObject.connect(self.gui.stop_button,
QtCore.SIGNAL('clicked()'),
self.on_stop)
QtCore.QObject.connect(self.gui.scale_spinbutton,
QtCore.SIGNAL('valueChanged(int)'),
self.on_scale)
QtCore.QObject.connect(self.gui.quit_button,
QtCore.SIGNAL('clicked()'),
QtCore.QCoreApplication.instance().quit)
class SimplePlot(QWidget):
"""Simple example with a Qwt plot in a Qt GUI"""
def __init__(self):
super(SimplePlot, self).__init__()
# Set up the user interface from Designer.
self.gui = Ui_PlotTest()
self.gui.setupUi(self)
# Init local variables
self.scale = 1E-8
self.active = False
self.start = None
self.plot_length = 20
# Set up plot (using pretty much all the possible options)
self.plots_l = ['signal1', 'signal2']
self.plots_r = ['aux_signal1']
self.plotter = DataPlotter(
self.plots_l, right_plotlist=self.plots_r, parent=self,
left_log=True, title='Awesome plots',
yaxis_left_label='Log sine, cos', yaxis_right_label='Noisy line',
xaxis_label='Time since start [s]',
legend='right', left_thickness=[2, 8], right_thickness=6,
left_colors=['firebrick', 'darkolivegreen'],
right_colors=['darksalmon'])
self.gui.horizontalLayout.addWidget(self.plotter.plot)
# Make the content scale with the Window
self.setLayout(self.gui.horizontalLayout)
# Connect signals
QtCore.QObject.connect(self.gui.start_button,
QtCore.SIGNAL('clicked()'),
self.on_start)
QtCore.QObject.connect(self.gui.stop_button,
QtCore.SIGNAL('clicked()'),
self.on_stop)
QtCore.QObject.connect(self.gui.scale_spinbutton,
QtCore.SIGNAL('valueChanged(int)'),
self.on_scale)
QtCore.QObject.connect(self.gui.quit_button,
QtCore.SIGNAL('clicked()'),
QtCore.QCoreApplication.instance().quit)
def on_start(self):
"""Start button method"""
print 'start pressed'
if not self.active:
self.start = time.time()
self.active = True
# Reset plot
for key in self.plotter.data.keys():
self.plotter.data[key] = []
QtCore.QTimer.singleShot(0, self.plot_iteration)
def on_stop(self):
"""Stop button method"""
print 'stop pressed'
self.active = False
def on_scale(self, value):
"""Scale spin button method"""
print 'scale change, new value'.format(self.scale)
self.scale = 10 ** value
self.gui.scale_label.setText('1E' + str(value))
def plot_iteration(self):
"""method that emulates a single data gathering and plot update"""
elapsed = time.time() - self.start
if elapsed <= self.plot_length:
value = (np.sin(elapsed) + 1.1) * self.scale
self.plotter.add_point('signal1', (elapsed, value))
value = (np.cos(elapsed) + 1.1) * self.scale
self.plotter.add_point('signal2', (elapsed, value))
value = elapsed + random.random()
self.plotter.add_point('aux_signal1', (elapsed, value))
else:
self.active = False
if self.active:
# Under normal curcumstances we would not add a delay
QtCore.QTimer.singleShot(100, self.plot_iteration)
