如何绘制移动和使用JFree图表中的Java运行正弦波图？

问题描述

我米使用JFreeChart的绘制运行或与NetBeans移动正弦波在java中。我写code它，但它并不像移动或运行正弦波曲线图。所以，如果你有任何关于这则建议我的想法。
我的code是低于

 进口java.awt.BorderLayout中;
进口java.awt.Color中;
进口java.awt.event.ActionEvent中;
进口java.awt.event.ActionListener;
进口javax.swing.JButton中;
进口javax.swing.JPanel中;
进口org.jfree.chart.ChartFactory;
进口org.jfree.chart.ChartPanel;
进口org.jfree.chart.JFreeChart;
进口org.jfree.chart.plot.PlotOrientation;
进口org.jfree.chart.plot.XYPlot;
进口org.jfree.data.xy.XYDataset;
进口org.jfree.data.xy.XYSeries;
进口org.jfree.data.xy.XYSeriesCollection;
进口org.jfree.ui.ApplicationFrame;
公共类DrawChart扩展ApplicationFrame实现的ActionListener {    公共XYSeries系列;    公共DrawChart（最后弦乐标题）{        超（职称）;
        系列=新XYSeries（正弦波，真实，真实）;
        XYSeriesCollection数据=新XYSeriesCollection（系列）;
        最终的JFreeChart图表= createChart（数据）;        最后ChartPanel chartPanel =新ChartPanel（图）
        最后一个JButton按钮=的新的JButton（添加新数据项）;
        button.setActionCommand（add_data工具）;
        button.addActionListener（本）;        最终的JPanel内容=新JPanel（新的BorderLayout（））;
        content.add（chartPanel）;
        content.add（按钮，BorderLayout.SOUTH）;
        chartPanel.set preferredSize（新java.awt.Dimension中（500，270））;
        setContentPane（内容）;    }    私人的JFreeChart createChart（最终XYDataset数据集）{
        JFreeChart的jfreechart的= ChartFactory.createXYLineChart（仙曲线，角度（度），值，数据集，PlotOrientation.VERTICAL，真实的，真实的，真正的）;
        jfreechart.setBackgroundPaint（Color.white）;
        XYPlot xyplot =（XYPlot）jfreechart.getPlot（）;
        xyplot.setBackgroundPaint（Color.lightGray）;
        xyplot.setDomainGridlinePaint（Color.white）;
        xyplot.setRangeGridlinePaint（Color.white）;
        返回jfreechart的;
    }    公共无效的actionPerformed（ActionEvent的最终E）{
        如果（e.getActionCommand（）。等于（add_data工具））{
            的for（int i = 0; I＆LT; 100;我++）{
                最终双X =（我）/10.0;
                最终双Y = Math.sin（X）;
                this.series.addOrUpdate（X，Y）;
            }
        }
    }    公共静态无效的主要（最终字串[] args）{        最后DrawChart演示=新DrawChart（动态数据视图）;
        demo.pack（）;
        RefineryUtilities.centerFrameOnScreen（演示）;
        demo.setVisible（真）;
    }
}
 

解决方案

此例如，替换 Math.sin（）为 nextGaussian（）产生如下图所示。在1赫兹A javax.swing.Timer中的百步动画。

 私人ChartPanel createPane（）{
    最后XYSeries系列=新XYSeries（数据）;
    对（INT I = 0; I＆下; random.nextInt（N）+ N / 2;我++）{
        series.add（ⅰ，Math.sin（ⅰ））;
    }
    XYSeriesCollection数据=新XYSeriesCollection（系列）;
    新的Timer（1000，新的ActionListener（）{        @覆盖
        公共无效的actionPerformed（ActionEvent的五）{
            series.add（series.getItemCount（），Math.sin（series.getItemCount（）））;
        }
    }）。开始（）;
    ...
}
 

I m using JFreeChart to draw Running or Moving Sine Wave in java with netbeans. I write code for it , but it does not like moving or running sine wave graph. So if you have any idea regarding that then suggest me.My code is below

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;


public class DrawChart extends ApplicationFrame implements ActionListener {

    public XYSeries series;

    public DrawChart(final String title) {

        super(title);
        series = new XYSeries("Sine", true, true);
        XYSeriesCollection dataset = new XYSeriesCollection(series);
        final JFreeChart chart = createChart(dataset);

        final ChartPanel chartPanel = new ChartPanel(chart);
        final JButton button = new JButton("Add New Data Item");
        button.setActionCommand("ADD_DATA");
        button.addActionListener(this);

        final JPanel content = new JPanel(new BorderLayout());
        content.add(chartPanel);
        content.add(button, BorderLayout.SOUTH);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(content);

    }

    private JFreeChart createChart(final XYDataset dataset) {
        JFreeChart jfreechart = ChartFactory.createXYLineChart("Sin Curve", "Angle (Deg)", "Value", dataset, PlotOrientation.VERTICAL, true, true, true);
        jfreechart.setBackgroundPaint(Color.white);
        XYPlot xyplot = (XYPlot) jfreechart.getPlot();
        xyplot.setBackgroundPaint(Color.lightGray);
        xyplot.setDomainGridlinePaint(Color.white);
        xyplot.setRangeGridlinePaint(Color.white);
        return jfreechart;
    }

    public void actionPerformed(final ActionEvent e) {
        if (e.getActionCommand().equals("ADD_DATA")) {
            for (int i = 0; i < 100; i++) {
                final double x = (i)/10.0 ;
                final double y = Math.sin(x);
                this.series.addOrUpdate(x, y);
            }
        }
    }

    public static void main(final String[] args) {

        final DrawChart demo = new DrawChart("Dynamic Data view");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
    }
}

解决方案

Starting from this example, substituting Math.sin() for nextGaussian() produced the illustration below. A javax.swing.Timer paces the animation at 1 Hz.

private ChartPanel createPane() {
    final XYSeries series = new XYSeries("Data");
    for (int i = 0; i < random.nextInt(N) + N / 2; i++) {
        series.add(i, Math.sin(i));
    }
    XYSeriesCollection dataset = new XYSeriesCollection(series);
    new Timer(1000, new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            series.add(series.getItemCount(), Math.sin(series.getItemCount()));
        }
    }).start();
    …
}

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