在下面的代码中,请告诉我如何使用 Jfreechart 删除 IntervalMarker 中的行?
IntervalMarker target1 = new IntervalMarker(85,111);
GradientPaintTransformer t1 = new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL);
target1.setPaint(new GradientPaint(0.0F, 0.0F,new Color(189,227,208), 0.0F, 0.0F, new Color(186,214,231)));
target1.setGradientPaintTransformer(t1);
xyplot.addRangeMarker(target1,Layer.BACKGROUND);