owspectra.py 文件源码

def clear_graph(self):
        # reset caching. if not, it is not cleared when view changing when zoomed
        self.highlighted = None
        self.curves_cont.setCacheMode(QGraphicsItem.NoCache)
        self.curves_cont.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
        self.plot.vb.disableAutoRange()
        self.curves_cont.clear()
        self.curves_cont.update()
        self.plotview.clear()
        self.multiple_curves_info = []
        self.curves_plotted = []  # currently plotted elements (for rescale)
        self.curves = []  # for finding closest curve
        self.plotview.addItem(self.label, ignoreBounds=True)
        self.highlighted_curve = pg.PlotCurveItem(pen=self.pen_mouse)
        self.highlighted_curve.setZValue(10)
        self.highlighted_curve.hide()
        self.plot.addItem(self.highlighted_curve)
        self.plot.addItem(self.vLine, ignoreBounds=True)
        self.plot.addItem(self.hLine, ignoreBounds=True)
        self.viewhelpers = True
        self.plot.addItem(self.curves_cont)
        for m in self.markings:
            self.plot.addItem(m, ignoreBounds=True)