jfreechart多个渲染器工具提示无法正常工作

时间:2017-07-17 07:04:36

标签: jfreechart labels renderer

enter image description here我有一组包含2组图形(检测和本地化)的图形。第一组(本地化)是红色,橙色,粉红色,第二组(检测)是蓝色,黑色,青色。我为每个集创建了一个渲染器以设置颜色。我已将工具提示设置为true,但当我将鼠标移到第二组(检测)时,我看不到标签。我只能在鼠标悬停时看到第一组标签(见图片),但不能看到另一套标签。这是我的代码:

    JFreeChart avg_chart = ChartFactory.createTimeSeriesChart(
            "Average detections and localizations" ,
            "" ,
            "" ,
            null ,
            true , true , false);
    avg_chart.setBackgroundPaint(Color.WHITE);

    final XYPlot plot = avg_chart.getXYPlot( );
    plot.setDataset(0,this.dataset_local);
    plot.setDataset(1,this.dataset_detect);
    plot.setRangeAxis(0,new NumberAxis("Localizations"));
    plot.setRangeAxis(1,new NumberAxis("Detections"));

    plot.mapDatasetToRangeAxis(0, 0);
    plot.mapDatasetToRangeAxis(1, 1);

    plot.setDomainCrosshairVisible(true);
    plot.setRangeCrosshairVisible(true);

    XYLineAndShapeRenderer renderer1 = (XYLineAndShapeRenderer) plot.getRenderer(0);//localization
    renderer1.setSeriesPaint( 0 , Color.RED );
    renderer1.setSeriesPaint( 1 , Color.MAGENTA );
    renderer1.setSeriesPaint( 2 , Color.orange );
    renderer1.setBaseItemLabelsVisible(true);

    XYLineAndShapeRenderer renderer2 = new XYLineAndShapeRenderer(true, false); //detection ****************
    renderer2.setSeriesPaint( 0 , Color.BLUE);
    renderer2.setSeriesPaint( 1 , Color.BLACK );
    renderer2.setSeriesPaint( 2 , Color.CYAN );
    renderer2.setBaseItemLabelsVisible(true);

    plot.setRenderer(0,renderer1);
    plot.setRenderer(1,renderer2);

    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    DateAxis axis = (DateAxis) plot.getDomainAxis();
    axis.setDateFormatOverride(new SimpleDateFormat("dd/MM/yyyy"));
    return avg_chart;

}

我尝试过XYLineAndShapeRenderer renderer2 =(XYLineAndShapeRenderer)plot.getRenderer(1),但它给出了一个非常例外。

1 个答案:

答案 0 :(得分:1)

XYToolTipGeneratorrenderer1时,

ChartFactory.createTimeSeriesChart()会为tooltips添加true。您可能只需要将其与renderer2

一起使用
renderer2.setBaseToolTipGenerator(renderer1.getBaseToolTipGenerator());

或者您可以向renderer2添加新的

XYToolTipGenerator toolTipGenerator2 = StandardXYToolTipGenerator.getTimeSeriesInstance();
renderer2.setBaseToolTipGenerator(toolTipGenerator2);