Jfree图表更改Y轴数据 [英] Jfree chart change Y axis data

问题描述

我使用Jfree图表0.9.20的XYLineChartDemo来绘制程序中运行进程的执行时间。我的X轴表示时间，Y轴表示Pid。如何编辑Jfreechart文件，使我的Y轴表示我想要的值，而不是数字0范围？还有一种方法，使绘制的线条做得更宽的宽度？

I am using Jfree chart 0.9.20's XYLineChartDemo for plotting the execution time of running processes in a program. My X axis denotes the time and Y axis should denote the Pid. How can I edit the Jfreechart files to make my Y axis to denote values I want and not numbers 0-range?? Also is there a way to make the line plotted to be made thicker in width?

推荐答案

研究：

public JFreeChart createChart(String axisX, String axisY){

    JFreeChart chart = ChartFactory.createTimeSeriesChart(null, axisX, axisY, dataSeries, true, true, false);

    final XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
    renderer.setSeriesLinesVisible(0,true);
    renderer.setSeriesShapesVisible(0, true);

    //percentage (y-axis)
    final NumberAxis percentAxis = new NumberAxis(axisY);
    percentAxis.setInverted(false);
    percentAxis.setRange(0.0, 100.0);

    //time (x-axis)
    final DateAxis timeAxis = new DateAxis(axisX);
    timeAxis.setStandardTickUnits(DateAxis.createStandardDateTickUnits(TimeZone.getDefault(), Locale.ENGLISH));

    double range = 0;

    switch (format){
        case ONE_MINUTE_RANGE: range = 60*1000; break;
        case TEN_MINUTE_RANGE: range = 10*60*1000; break;
        case ONE_HOUR_RANGE: range = 60*60*1000; break;
    }

    timeAxis.setRange(System.currentTimeMillis()-range/2, System.currentTimeMillis()+range/2); //time duration based on format chosen

    XYPlot plot = chart.getXYPlot();
    plot.setDomainAxis(timeAxis);
    plot.setRangeAxis(percentAxis);

    plot.setBackgroundPaint(Color.white);
    plot.setRangeGridlinePaint(Color.gray);
    plot.setRangeZeroBaselinePaint(Color.gray);
    plot.setDomainGridlinePaint(Color.gray);
    plot.setForegroundAlpha(0.5f);
    plot.setRenderer(renderer);

    chart.setBackgroundPaint(Color.white);

    return chart;
}

这篇关于Jfree图表更改Y轴数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！