def initplotKline(self):
"""Kline"""
self.pw2 = pg.PlotWidget(name='Plot2') # K??
self.vbl_2.addWidget(self.pw2)
self.pw2.setDownsampling(mode='peak')
self.pw2.setClipToView(True)
self.curve5 = self.pw2.plot()
self.curve6 = self.pw2.plot()
self.candle = self.CandlestickItem(self.listBar)
self.pw2.addItem(self.candle)
## Draw an arrowhead next to the text box
# self.arrow = pg.ArrowItem()
# self.pw2.addItem(self.arrow)
#----------------------------------------------------------------------
python类ArrowItem()的实例源码
def plotText(self):
"""?????"""
lenClose = len(self.listClose)
if lenClose >= 5: # Fractal Signal
if self.listClose[-1] > self.listClose[-2] and self.listClose[-3] > self.listClose[-2] and self.listClose[-4] > self.listClose[-2] and self.listClose[-5] > self.listClose[-2] and self.listfastEMA[-1] > self.listslowEMA[-1]:
## Draw an arrowhead next to the text box
# self.pw2.removeItem(self.arrow)
self.arrow = pg.ArrowItem(pos=(lenClose-1, self.listLow[-1]), angle=90, brush=(255, 0, 0))
self.pw2.addItem(self.arrow)
elif self.listClose[-1] < self.listClose[-2] and self.listClose[-3] < self.listClose[-2] and self.listClose[-4] < self.listClose[-2] and self.listClose[-5] < self.listClose[-2] and self.listfastEMA[-1] < self.listslowEMA[-1]:
## Draw an arrowhead next to the text box
# self.pw2.removeItem(self.arrow)
self.arrow = pg.ArrowItem(pos=(lenClose-1, self.listHigh[-1]), angle=-90, brush=(0, 255, 0))
self.pw2.addItem(self.arrow)
#----------------------------------------------------------------------
def __init__(self, model):
pg.GraphicsWidget.__init__(self)
pg.GraphicsWidgetAnchor.__init__(self)
self.model = model
self.arrow = pg.ArrowItem(
parent=self,
angle=0.,
brush=(0, 0, 0, 180),
pen=(255, 255, 255),
pxMode=True)
self.orientArrow()
self.model.sigSceneChanged.connect(self.orientArrow)
self.setFlag(self.ItemIgnoresTransformations)
def setup(self):
self.settings.New('spec_index', dtype=int, initial=0)
self.settings.spec_index.add_listener(self.on_spec_index_change)
self.settings.New("x_axis", dtype=str, initial='power_wheel', choices=('power_wheel', 'pm_power'))
self.ui = QtWidgets.QGroupBox()
self.ui.setLayout(QtWidgets.QVBoxLayout())
self.ui.spec_index_doubleSpinBox = QtWidgets.QDoubleSpinBox()
self.settings.spec_index.connect_bidir_to_widget(self.ui.spec_index_doubleSpinBox)
self.ui.layout().addWidget(self.ui.spec_index_doubleSpinBox)
self.ui.x_axis_comboBox = QtWidgets.QComboBox()
self.settings.x_axis.connect_to_widget(self.ui.x_axis_comboBox)
self.ui.layout().addWidget(self.ui.x_axis_comboBox)
self.graph_layout = pg.GraphicsLayoutWidget()
self.ui.layout().addWidget(self.graph_layout)
self.power_plot = self.graph_layout.addPlot()
self.power_plot.setLogMode(x=True, y=True)
self.power_plotcurve = self.power_plot.plot([1],[1])
self.power_plot_current_pos = self.power_plot.plot(symbol='o')
#self.power_plot_arrow = pg.ArrowItem()
#self.power_plot_arrow.setPos(0,0)
#self.power_plot.addItem(self.power_plot_arrow)
self.graph_layout.nextRow()
self.spec_plot = self.graph_layout.addPlot()
self.spec_plotcurve = self.spec_plot.plot([0])
def setup(self):
self.settings.New('spec_index', dtype=int, initial=0)
self.settings.spec_index.add_listener(self.on_spec_index_change)
self.ui = QtWidgets.QGroupBox()
self.ui.setLayout(QtWidgets.QVBoxLayout())
self.ui.spec_index_doubleSpinBox = QtWidgets.QDoubleSpinBox()
self.settings.spec_index.connect_bidir_to_widget(self.ui.spec_index_doubleSpinBox)
self.ui.layout().addWidget(self.ui.spec_index_doubleSpinBox)
self.graph_layout = pg.GraphicsLayoutWidget()
self.ui.layout().addWidget(self.graph_layout)
self.power_plot = self.graph_layout.addPlot()
self.power_plot.setLogMode(x=True, y=True)
self.power_plotcurve = self.power_plot.plot([1],[1], name='Data')
self.power_fit_plotcurve = self.power_plot.plot([1],[1],pen='r', name='Fit')
self.power_plot_arrow = pg.ArrowItem()
self.power_plot_arrow.setPos(0,0)
self.power_plot.addItem(self.power_plot_arrow)
self.power_plot_lr = pg.LinearRegionItem([1,2])
self.power_plot_lr.setZValue(-10)
self.power_plot.addItem(self.power_plot_lr)
self.power_plot_lr.sigRegionChanged.connect(self.redo_fit)
#self.power_plot_legend = pg.LegendItem()
#self.power_plot.addItem(self.power_plot_legend)
#self.power_plot_legend.addItem(self.power_plotcurve)
#self.power_plot_legend.addItem(self.power_fit_plotcurve)
self.fit_text = pg.TextItem("fit")
self.fit_text.setParentItem(self.power_plot_lr, )
self.graph_layout.nextRow()
self.spec_plot = self.graph_layout.addPlot()
self.spec_plotcurve = self.spec_plot.plot([0])
