折线被隐藏，看不到，但是数据都大于0（双Y轴折线图）

[changsir99]

[changsir99]

public static JFreeChart geneLineChart(DoubleYLineParameter parameter, Range leftRange, Range rightRange) {
//应用主题样式
ChartFactory.setChartTheme(JFreeChartUtil.geneStandardChartTheme());
// 创建JFreeChart对象
JFreeChart chart = ChartFactory.createXYStepChart(parameter.getTableName(), parameter.getXName(), "", null,
//图表方向
PlotOrientation.VERTICAL,
true, true, false);
chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
// 设置背景颜色
chart.setBackgroundPaint(ChartColor.WHITE);
LegendTitle legend = chart.getLegend();
legend.setPosition(RectangleEdge.TOP);
// 获取绘图区域对象
XYPlot plot = (XYPlot) chart.getPlot();
plot.setBackgroundAlpha(0.0f);
plot.setOutlinePaint(null);
plot.setRangeGridlinePaint(Color.BLACK);
// 设置x轴属性
DateAxis dateAxis = (DateAxis) plot.getDomainAxis();
dateAxis.setAutoTickUnitSelection(true);
dateAxis.setDateFormatOverride(new SimpleDateFormat("yyyy-MM-dd"));
dateAxis.setLowerMargin(0.01);
dateAxis.setUpperMargin(0.01);
dateAxis.setPositiveArrowVisible(true);
// 设置Y1轴
NumberAxis axis1 = new NumberAxis(parameter.getNameLeft());
axis1.setPositiveArrowVisible(true);
if (!ObjectUtils.isEmpty(leftRange)){
axis1.setRange(leftRange);
}
plot.setRangeAxis(0, axis1);
plot.setDataset(0, parameter.getDataLeft());
plot.mapDatasetToRangeAxis(0, 0);
// 设置Y2轴
NumberAxis axis2 = new NumberAxis(parameter.getNameRight());
axis2.setPositiveArrowVisible(true);
if (!ObjectUtils.isEmpty(rightRange)){
axis2.setRange(rightRange);
}
plot.setRangeAxis(1, axis2);
plot.setDataset(1, parameter.getDataRight());
plot.mapDatasetToRangeAxis(1, 1);
// 设置第一个系列的绘制器和颜色
XYSplineRenderer rendererLeft = new XYSplineRenderer(3);
rendererLeft.setSeriesPaint(0, Color.decode(parameter.getYLeftColor()));
rendererLeft.setDefaultShapesVisible(false);
plot.setRenderer(0, rendererLeft);
// 设置第二个系列的绘制器和颜色
XYSplineRenderer renderRight = new XYSplineRenderer(3);
renderRight.setSeriesPaint(0, Color.decode(parameter.getYRightColor()));
renderRight.setDefaultShapesVisible(false);
plot.setRenderer(1, renderRight);
return chart;
}This is my code, the problem hasn't been solved yet, the polyline has overflowed

[trashgod]

See also issue #286.