owpolynomialregression.py 文件源码

def plot_regression_line(self, x_data, y_data):
        if self.plot_item:
            self.plotview.removeItem(self.plot_item)
        self.plot_item = pg.PlotCurveItem(
            x=x_data, y=y_data,
            pen=pg.mkPen(QColor(255, 0, 0), width=3),
            antialias=True
        )
        self.plotview.addItem(self.plot_item)
        self.plotview.replot()