JFreeChart散点图小例子

我这有个可参考下。package com;import org.jfree.ui.ApplicationFrame;
import java.awt.Color;
import java.awt.Dimension;
import java.text.NumberFormat;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.plot.*;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.DataUtilities;
import org.jfree.data.DefaultKeyedValues;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.RefineryUtilities;
import org.jfree.util.SortOrder;public class ParetoChartDemo1 extends ApplicationFrame
{    public ParetoChartDemo1(String s)
    {
        super(s);
        JPanel jpanel = createDemoPanel();
        jpanel.setPreferredSize(new Dimension(550, 270));
        setContentPane(jpanel);
    }    public static JFreeChart createChart(CategoryDataset acategorydataset[])
    {
        JFreeChart jfreechart = ChartFactory.createBarChart("Freshmeat Software Projects", "Language", "Projects", acategorydataset[0], PlotOrientation.VERTICAL, true, true, false);
        jfreechart.addSubtitle(new TextTitle("By Programming Language"));
        jfreechart.addSubtitle(new TextTitle("As at 5 March 2003"));
        jfreechart.setBackgroundPaint(Color.white);
        CategoryPlot categoryplot = (CategoryPlot)jfreechart.getPlot();
        categoryplot.setBackgroundPaint(Color.lightGray);
        categoryplot.setRangeGridlinePaint(Color.white);
        CategoryAxis categoryaxis = categoryplot.getDomainAxis();
        categoryaxis.setLowerMargin(0.02D);
        categoryaxis.setUpperMargin(0.02D);
        categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_90);
        NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();
        numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        LineAndShapeRenderer lineandshaperenderer = new LineAndShapeRenderer();
        NumberAxis numberaxis1 = new NumberAxis("Percent");
        numberaxis1.setNumberFormatOverride(NumberFormat.getPercentInstance());
        categoryplot.setRangeAxis(1, numberaxis1);
        categoryplot.setDataset(1, acategorydataset[1]);
        categoryplot.setRenderer(1, lineandshaperenderer);
        categoryplot.mapDatasetToRangeAxis(1, 1);
        categoryplot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
        return jfreechart;
    }    public static CategoryDataset[] createDatasets()
    {
        DefaultKeyedValues defaultkeyedvalues = new DefaultKeyedValues();
        defaultkeyedvalues.addValue("C", new Integer(4843));
        defaultkeyedvalues.addValue("C++", new Integer(2098));
        defaultkeyedvalues.addValue("C#", new Integer(26));
        defaultkeyedvalues.addValue("Java", new Integer(1901));
        defaultkeyedvalues.addValue("Perl", new Integer(2507));
        defaultkeyedvalues.addValue("PHP", new Integer(1689));
        defaultkeyedvalues.addValue("Python", new Integer(948));
        defaultkeyedvalues.addValue("Ruby", new Integer(100));
        defaultkeyedvalues.addValue("SQL", new Integer(263));
        defaultkeyedvalues.addValue("Unix Shell", new Integer(485));
        defaultkeyedvalues.sortByValues(SortOrder.DESCENDING);
        org.jfree.data.KeyedValues keyedvalues = DataUtilities.getCumulativePercentages(defaultkeyedvalues);
        CategoryDataset categorydataset = DatasetUtilities.createCategoryDataset("Languages", defaultkeyedvalues);
        CategoryDataset categorydataset1 = DatasetUtilities.createCategoryDataset("Cumulative", keyedvalues);
        return (new CategoryDataset[] {
            categorydataset, categorydataset1
        });
    }    public static JPanel createDemoPanel()
    {
        CategoryDataset acategorydataset[] = createDatasets();
        JFreeChart jfreechart = createChart(acategorydataset);
        return new ChartPanel(jfreechart);
    }    public static void main(String args[])
    {
        ParetoChartDemo1 paretochartdemo1 = new ParetoChartDemo1("Pareto Chart Demo 1");
        paretochartdemo1.pack();
        RefineryUtilities.centerFrameOnScreen(paretochartdemo1);
        paretochartdemo1.setVisible(true);
    }
}

http://www.javaeye.com/topic/544104

这是快速散点图，float的data存储数据。定义两个轴为XY。调用时传入标题，X轴上的数据，Y轴上的数据。package analysis;import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.FastScatterPlot;
import org.jfree.ui.RefineryUtilities;    public class ScatterPlot
    {
    public static void data(String title,String[] a,String[] b)
    {
    float[][] data=new float[2][a.length];
    for(int i=0;i<a.length;i++)
    {
     data[0][i]=Float.parseFloat(a[i]);
     data[1][i]=Float.parseFloat(b[i]);
    }
        final DateAxis  domainAxis = new DateAxis("X");
        //domainAxis.setAutoRangeIncludesZero(false);        final NumberAxis rangeAxis = new NumberAxis("Y");
        rangeAxis.setAutoRangeIncludesZero(false);
        final FastScatterPlot plot = new FastScatterPlot(data, domainAxis, rangeAxis);
       // FastScatterPlot plot1=ChartFactory.createScatterPlot(title, title, title, dataset, orientation, legend, tooltips, urls);        final JFreeChart chart = new JFreeChart(title, plot);
        ChartFrame frame = new ChartFrame(title,chart);
        frame.pack();
        RefineryUtilities.centerFrameOnScreen(frame);
        frame.setVisible(true);
    }    }

java代码
/**
*
* @param xydatalist
* @param bloods
* @return
*/
public static XYDataset createxydataset(List<PressureBean> xydatalist,
String bloods) {
DefaultXYDataset xydataset = new DefaultXYDataset(); int size = xydatalist.size();
double[][] datas = new double[2][size];
for (int i = 0; i < size; i++) {
PressureBean pres = xydatalist.get(i);
int sys = pres.getSyspress();//收缩压
int dia = pres.getDiapress();//舒张压 datas[0][i] = sys;
datas[1][i] = dia;
} xydataset.addSeries(bloods, datas); return xydataset; }public static JFreeChart createChart(XYDataset xydataset,
String bloodcattile, String shou, String shu, String nobloodData,
String bloods, String nomal, String fore, String one, String two,
List<PressureBean> list, Log log) { // 有可能用户在后面的版本中故意输入不正常数值，但是为了保证图片画图的完整，这里先计算
// 用户血压值的最大值。
int maxpress = 160;
int addmax = 20; if (list != null && list.size() > 0) { Iterator<PressureBean> it = list.iterator();
while (it.hasNext()) {
PressureBean pres = it.next();

if (maxpress < pres.getDiapress()) {
maxpress = pres.getDiapress();
} if (maxpress < pres.getSyspress()) {
maxpress = pres.getSyspress();
}
} maxpress += addmax;
log.info("high press value is =" + maxpress); } JFreeChart jfreechart = ChartFactory.createScatterPlot(bloodcattile,
shou, shu, xydataset, PlotOrientation.VERTICAL, true, false,
false);
jfreechart.setBackgroundPaint(Color.white);
jfreechart.setBorderPaint(Color.GREEN);
jfreechart.setBorderStroke(new BasicStroke(1.5f));
XYPlot xyplot = (XYPlot) jfreechart.getPlot();
xyplot.setNoDataMessage(nobloodData);
xyplot.setNoDataMessageFont(new Font("", Font.BOLD, 14));
xyplot.setNoDataMessagePaint(new Color(87, 149, 117)); xyplot.setBackgroundPaint(new Color(255, 253, 246));
ValueAxis vaaxis = xyplot.getDomainAxis();
vaaxis.setAxisLineStroke(new BasicStroke(1.5f)); ValueAxis va = xyplot.getDomainAxis(0);
va.setAxisLineStroke(new BasicStroke(1.5f)); va.setAxisLineStroke(new BasicStroke(1.5f)); // 坐标轴粗细
va.setAxisLinePaint(new Color(215, 215, 215)); // 坐标轴颜色
xyplot.setOutlineStroke(new BasicStroke(1.5f)); // 边框粗细
va.setLabelPaint(new Color(10, 10, 10)); // 坐标轴标题颜色
va.setTickLabelPaint(new Color(102, 102, 102)); // 坐标轴标尺值颜色
ValueAxis axis = xyplot.getRangeAxis();
axis.setAxisLineStroke(new BasicStroke(1.5f)); XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer) xyplot
.getRenderer();
xylineandshaperenderer.setSeriesOutlinePaint(0, Color.WHITE);
xylineandshaperenderer.setUseOutlinePaint(true);
NumberAxis numberaxis = (NumberAxis) xyplot.getDomainAxis();
numberaxis.setAutoRangeIncludesZero(false);
numberaxis.setTickMarkInsideLength(2.0F);
numberaxis.setTickMarkOutsideLength(0.0F);
numberaxis.setAxisLineStroke(new BasicStroke(1.5f));
numberaxis.setUpperBound(maxpress);
numberaxis.setLowerBound(60);//最小值设置为60
NumberAxis numberaxis1 = (NumberAxis) xyplot.getRangeAxis();
numberaxis1.setTickMarkInsideLength(2.0F);
numberaxis1.setTickMarkOutsideLength(0.0F);
numberaxis1.setUpperBound(105d);
numberaxis1.setLowerBound(35);
numberaxis1.setAxisLineStroke(new BasicStroke(1.5f)); // if (xydataset != null) {
XYBoxAnnotation box = new XYBoxAnnotation(0, 0, 89, 59); //正常血压所在区域内边界
XYBoxAnnotation box1 = new XYBoxAnnotation(0, 0, 119, 79);//高血压前期所在区域内边界
XYBoxAnnotation box2 = new XYBoxAnnotation(0, 0, 139, 89);//高血压一期所在区域内边界
XYBoxAnnotation box3 = new XYBoxAnnotation(0, 0, 159, 99);//高血压二期所在区域内边界
XYTextAnnotation text1 = new XYTextAnnotation(nomal, 70, 62.5);//标识“正常”
XYTextAnnotation text = new XYTextAnnotation(fore, 70, 82.5);//“高血压前期”
XYTextAnnotation text2 = new XYTextAnnotation(one, 70, 91.5);//“高血压一期”
XYTextAnnotation text3 = new XYTextAnnotation(two, 70, 101.5);//“高血压二期”
//将上面的边界线条，说明文字加入到xyplot中。
xyplot.addAnnotation(box);
xyplot.addAnnotation(box1);
xyplot.addAnnotation(box2);
xyplot.addAnnotation(box3); xyplot.addAnnotation(text);
xyplot.addAnnotation(text1);
xyplot.addAnnotation(text2);
xyplot.addAnnotation(text3);
// }
return jfreechart;
}
public static void drawScatterChart(IrisIoInterface io, Log log,
XYDataset xydataSet, String title, String shou, String shu,
String nodata, String boolds, String nomal, String fore,
String one, String two, List<PressureBean> list) { JFreeChart chart = createChart(xydataSet, title, shou, shu, nodata,
boolds, nomal, fore, one, two, list, log); HttpServletRequest request = io.getRequest();
String filename = "";
String graphURL = "";
try {
filename = ServletUtilities.saveChartAsPNG(chart, 400, 300, null,
io.getSession());
graphURL = request.getContextPath() + "/displayChart?filename="
+ filename;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
log.error(e);
} io.setData("filename", filename, BeanShare.BEAN_SHARE_REQUEST);
io.setData("scatterurl", graphURL, BeanShare.BEAN_SHARE_REQUEST); }

调试易

JFreeChart散点图小例子

解决方案 »