如何在jfreechart中绘制线条,点和其他形状?

时间:2013-07-14 23:54:04

标签: jfreechart draw lines shapes numerical-methods

我想知道如何在XY图上的jfreechart中绘制线条,点(或小圆圈),矩形和梯形。其中大多数从某些坐标到范围零基线。我必须代表这样的寻根方法:

http://www2.lv.psu.edu/ojj/courses/cmpsc-201/201-images/bisect.jpg

或辛普森这样的规则:

http://upload.wikimedia.org/wikipedia/commons/0/08/Simpson_rule.png

我已经有了找到解决方案和绘图的功能,我只需要在某些坐标中绘制形状。我是jfreechart和绘图的新手,我一直在寻找方法。

我的情节代码:

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.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.chart.plot.XYPlot;

public class Grafica1 {
JFreeChart grafica;
XYSeriesCollection datos=new XYSeriesCollection();
String titulo;
String etiquetax;
String etiquetay;
int cont=1;

public Grafica1(String t, String x, String y){
    titulo=t;
    etiquetax=x;
    etiquetay=y;
    grafica=ChartFactory.createXYLineChart(titulo, x, y, datos, PlotOrientation.VERTICAL, true, true, true);
    XYPlot plot= (XYPlot) grafica.getPlot();
    //plot.setDomainZeroBaselineVisible(true);
    plot.setRangeZeroBaselineVisible(true);
}
public Grafica1(){
    this("Sin título", "x", "y");
}

public void agregarGrafica(String id, double[] x, double[] y){
    XYSeries s=new XYSeries("["+(cont++)+"] "+id);
    int n=x.length;
    for(int i=0;i<n;i++){
        s.add(x[i], y[i]);
    }
    datos.addSeries(s);

}

public void crearGrafica(String id, double[] x, double[] y){
    cont=1;
    datos.removeAllSeries();
    agregarGrafica(id, x, y);

}

public JPanel obtieneGrafica(){
    return new ChartPanel(grafica);
}

}

1 个答案:

答案 0 :(得分:1)

您可以将XYLineAndShapeRendererSwingWorker合并,如图所示here。根据需要使用annotationsmarkers

image