Reportlab线条图边框

Question

我们的脚本读取一些数据并用折线图生成报表。 但Y轴的值可以大于Y轴的最大值，或者小于最小值。在这种情况下，我们只需要展示符合边界的部分。但它超出了图表的边界。 有没有办法让直线图保持在图的边界上？在

    def add_chart(self, x, y, width, height, drawing, data, total_length):
        lc = LinePlot()
        lc.x, lc.y = x, y
        lc.width, lc.height = width, height
        lc.data = data

        lc.xValueAxis.valueMin = 0
        lc.xValueAxis.valueMax = total_length
        lc.xValueAxis.valueStep = total_length / 10
        lc.xValueAxis.labelTextFormat = seconds_to_hms
        lc.xValueAxis.labels.fontSize = 8

        lc.yValueAxis.valueMin = 0
        lc.yValueAxis.valueMax = 1500
        lc.yValueAxis.valueStep = (lc.yValueAxis.valueMax - lc.yValueAxis.valueMin) / 10
        lc.yValueAxis.visibleGrid = 1
        drawing.add(lc)
        drawing.drawOn(self.canvas, 0, 0)