是否可以使用 FillBetweenItem 在 pyqtgraph 中的两个 PlotCurveItem 之间进行填充?

Is it possible to use FillBetweenItem to fill between two PlotCurveItem's in pyqtgraph?

我试图在使用 pyqtgraph 中的 PlotCurveItem 创建的两条曲线之间进行填充。

            phigh = self.p2.addItem(pg.PlotCurveItem(x, y, pen = 'k'))           
            plow = self.p2.addItem(pg.PlotCurveItem(x, yy, pen = 'k'))           
            pfill = pg.FillBetweenItem(phigh, plow, brush = br)
            self.p2.addItem(pfill)

曲线项绘制正确,但没有填充。

这修复了它。

            phigh = pg.PlotCurveItem(x, y, pen = 'k')           
            plow = pg.PlotCurveItem(x, yy, pen = 'k')                  
            pfill = pg.FillBetweenItem(ph, plow, brush = br)
            self.p2.addItem(ph)
            self.p2.addItem(plow)
            self.p2.addItem(pfill)