linechart.java

操作系统课程设计：页面置换算法！！！很好的操作系统大作业

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package app;

import java.awt.Color;
import java.awt.Dimension;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.RectangleInsets;

/**
 *
 * @author Administrator
 */
public class LineChart{
  
    private ChartPanel chartpanel = null;
    private String name1 = null;
    private String name2 = null;
    public LineChart(double[] fir,double[] sec,String name1,String name2)
    {
        this.name1 = name1;
        this.name2 = name2;
        XYDataset xydataset = createDataset(fir,sec);
        JFreeChart jfreechart = createChart(xydataset);
        chartpanel = new ChartPanel(jfreechart);
    }
    public JPanel getJPanel()
    {
        return chartpanel;
    }
    private JFreeChart createChart(XYDataset xydataset) {
        JFreeChart jfreechart = ChartFactory.createXYLineChart(name1+"与"+name2+"各时刻缺页率的对比图", "时刻", "缺页率%", xydataset, PlotOrientation.VERTICAL, true, true, false);
        jfreechart.setBackgroundPaint(Color.white);
        XYPlot xyplot = (XYPlot)jfreechart.getPlot();
        xyplot.setBackgroundPaint(Color.lightGray);
        xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));
        xyplot.setDomainGridlinePaint(Color.white);
        xyplot.setRangeGridlinePaint(Color.white);
        XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer();
        xylineandshaperenderer.setShapesVisible(true);
        xylineandshaperenderer.setShapesFilled(true);
        NumberAxis numberaxis = (NumberAxis)xyplot.getRangeAxis();
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        return jfreechart;
    }

    private XYDataset createDataset(double[] fir,double[] sec) {
        XYSeries xyseries = new XYSeries(name1);
        for (int i = 1; i <= fir.length; i++) {
            xyseries.add(i, fir[i-1]*100);
        }

        XYSeries xyseries1 = new XYSeries(name2);
        for (int i = 1; i <= sec.length; i++) {
            xyseries1.add(i, sec[i-1]*100);
        }        

        XYSeriesCollection xyseriescollection = new XYSeriesCollection();
        xyseriescollection.addSeries(xyseries);
        xyseriescollection.addSeries(xyseries1);
        return xyseriescollection;
    }
}