JFreeChart画雷达图、带刻度雷达图、蜘蛛网、带刻度蜘蛛网（转自：http://blog.csdn.net/guoquanyou/archive/2008/12/10/3488313.aspx）
2011-06-02 22:48
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画雷达图
/**
* @作者：Jcuckoo
* @日期：2008-12-9
* @版本：V 1.0
*/
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
SpiderWebPlot spiderwebplot = new SpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
蜘蛛网
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
String group2 = "orange ";
dataset.addValue(3, group2, "w1");
dataset.addValue(3, group2, "w2");
dataset.addValue(4, group2, "w3");
dataset.addValue(7, group2, "w4");
dataset.addValue(4, group2, "w5");
dataset.addValue(5, group2, "w6");
dataset.addValue(3, group2, "w7");
dataset.addValue(3, group2, "w8");
String group3 = "banana ";
dataset.addValue(4, group3, "w1");
dataset.addValue(5, group3, "w2");
dataset.addValue(2, group3, "w3");
dataset.addValue(5, group3, "w4");
dataset.addValue(6, group3, "w5");
dataset.addValue(6, group3, "w6");
dataset.addValue(4, group3, "w7");
dataset.addValue(4, group3, "w8");
SpiderWebPlot spiderwebplot = new SpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
带刻度问题比较复杂，JFreeChart本身没有提供其功能，需要继承SpiderWebPlot，覆盖drawLabel方法。
此处代码参考Jerry代码，友情感谢。
MySpriderWebPlotTest出自“王杰瑞的技术博客” 博客，请务必保留此出处http://wangjierui.blog.51cto.com/186879/116845
/**
* @本文出自 “王杰瑞的技术博客” 博客，请务必保留此出处 http://wangjierui.blog.51cto.com/186879/116845
*/
public class MySpiderWebPlot extends SpiderWebPlot {
private int ticks = DEFAULT_TICKS;
private static final int DEFAULT_TICKS = 5;
private NumberFormat format = NumberFormat.getInstance();
private static final double PERPENDICULAR = 90;
private static final double TICK_SCALE = 0.015;
private int valueLabelGap = DEFAULT_GAP;
private static final int DEFAULT_GAP = 10;
private static final double THRESHOLD = 15;
MySpiderWebPlot(CategoryDataset createCategoryDataset) {
super(createCategoryDataset);
}
@Override
protected void drawLabel(final Graphics2D g2, final Rectangle2D plotArea, final double value,
final int cat, final double startAngle, final double extent) {
super.drawLabel(g2, plotArea, value, cat, startAngle, extent);
final FontRenderContext frc = g2.getFontRenderContext();
final double[] transformed = new double[2];
final double[] transformer = new double[2];
final Arc2D arc1 = new Arc2D.Double(plotArea, startAngle, 0, Arc2D.OPEN);
for (int i = 1; i <= ticks; i++) {
final Point2D point1 = arc1.getEndPoint();
final double deltaX = plotArea.getCenterX();
final double deltaY = plotArea.getCenterY();
double labelX = point1.getX() - deltaX;
double labelY = point1.getY() - deltaY;
final double scale = ((double) i / (double) ticks);
final AffineTransform tx = AffineTransform.getScaleInstance(scale, scale);
final AffineTransform pointTrans = AffineTransform.getScaleInstance(scale + TICK_SCALE, scale + TICK_SCALE);
transformer[0] = labelX;
transformer[1] = labelY;
pointTrans.transform(transformer, 0, transformed, 0, 1);
final double pointX = transformed[0] + deltaX;
final double pointY = transformed[1] + deltaY;
tx.transform(transformer, 0, transformed, 0, 1);
labelX = transformed[0] + deltaX;
labelY = transformed[1] + deltaY;
double rotated = (PERPENDICULAR);
AffineTransform rotateTrans = AffineTransform.getRotateInstance(Math.toRadians(rotated), labelX, labelY);
transformer[0] = pointX;
transformer[1] = pointY;
rotateTrans.transform(transformer, 0, transformed, 0, 1);
final double x1 = transformed[0];
final double y1 = transformed[1];
rotated = (-PERPENDICULAR);
rotateTrans = AffineTransform.getRotateInstance(Math.toRadians(rotated), labelX, labelY);
rotateTrans.transform(transformer, 0, transformed, 0, 1);
final Composite saveComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
g2.draw(new Line2D.Double(transformed[0], transformed[1], x1, y1));
if (startAngle == this.getStartAngle()) {
final String label = format.format(((double) i / (double) ticks) * this.getMaxValue());
final Rectangle2D labelBounds = getLabelFont().getStringBounds(label, frc);
final LineMetrics lm = getLabelFont().getLineMetrics(label, frc);
final double ascent = lm.getAscent();
if (Math.abs(labelX - plotArea.getCenterX()) < THRESHOLD) {
labelX += valueLabelGap;
labelY += ascent / (float) 2;
} else if (Math.abs(labelY - plotArea.getCenterY()) < THRESHOLD) {
labelY += valueLabelGap;
} else if (labelX >= plotArea.getCenterX()) {
if (labelY < plotArea.getCenterY()) {
labelX += valueLabelGap;
labelY += valueLabelGap;
} else {
labelX -= valueLabelGap;
labelY += valueLabelGap;
}
} else {
if (labelY > plotArea.getCenterY()) {
labelX -= valueLabelGap;
labelY -= valueLabelGap;
} else {
labelX += valueLabelGap;
labelY -= valueLabelGap;
}
}
g2.setPaint(getLabelPaint());
g2.setFont(getLabelFont());
g2.drawString(label, (float) labelX, (float) labelY);
}
g2.setComposite(saveComposite);
}
}
}
带刻度雷达图
/**
* @作者：Jcuckoo
* @日期：2008-12-9
* @版本：V 1.0
*/
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
MySpiderWebPlot spiderwebplot = new MySpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
带刻度蜘蛛网
/**
* @作者：Jcuckoo
* @日期：2008-12-9
* @版本：V 1.0
*/
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
String group2 = "orange ";
dataset.addValue(3, group2, "w1");
dataset.addValue(3, group2, "w2");
dataset.addValue(4, group2, "w3");
dataset.addValue(7, group2, "w4");
dataset.addValue(4, group2, "w5");
dataset.addValue(5, group2, "w6");
dataset.addValue(3, group2, "w7");
dataset.addValue(3, group2, "w8");
String group3 = "banana ";
dataset.addValue(4, group3, "w1");
dataset.addValue(5, group3, "w2");
dataset.addValue(2, group3, "w3");
dataset.addValue(5, group3, "w4");
dataset.addValue(6, group3, "w5");
dataset.addValue(6, group3, "w6");
dataset.addValue(4, group3, "w7");
dataset.addValue(4, group3, "w8");
MySpiderWebPlot spiderwebplot = new MySpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
/**
* @作者：Jcuckoo
* @日期：2008-12-9
* @版本：V 1.0
*/
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
SpiderWebPlot spiderwebplot = new SpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
蜘蛛网
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
String group2 = "orange ";
dataset.addValue(3, group2, "w1");
dataset.addValue(3, group2, "w2");
dataset.addValue(4, group2, "w3");
dataset.addValue(7, group2, "w4");
dataset.addValue(4, group2, "w5");
dataset.addValue(5, group2, "w6");
dataset.addValue(3, group2, "w7");
dataset.addValue(3, group2, "w8");
String group3 = "banana ";
dataset.addValue(4, group3, "w1");
dataset.addValue(5, group3, "w2");
dataset.addValue(2, group3, "w3");
dataset.addValue(5, group3, "w4");
dataset.addValue(6, group3, "w5");
dataset.addValue(6, group3, "w6");
dataset.addValue(4, group3, "w7");
dataset.addValue(4, group3, "w8");
SpiderWebPlot spiderwebplot = new SpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
带刻度问题比较复杂，JFreeChart本身没有提供其功能，需要继承SpiderWebPlot，覆盖drawLabel方法。
此处代码参考Jerry代码，友情感谢。
MySpriderWebPlotTest出自“王杰瑞的技术博客” 博客，请务必保留此出处http://wangjierui.blog.51cto.com/186879/116845
/**
* @本文出自 “王杰瑞的技术博客” 博客，请务必保留此出处 http://wangjierui.blog.51cto.com/186879/116845
*/
public class MySpiderWebPlot extends SpiderWebPlot {
private int ticks = DEFAULT_TICKS;
private static final int DEFAULT_TICKS = 5;
private NumberFormat format = NumberFormat.getInstance();
private static final double PERPENDICULAR = 90;
private static final double TICK_SCALE = 0.015;
private int valueLabelGap = DEFAULT_GAP;
private static final int DEFAULT_GAP = 10;
private static final double THRESHOLD = 15;
MySpiderWebPlot(CategoryDataset createCategoryDataset) {
super(createCategoryDataset);
}
@Override
protected void drawLabel(final Graphics2D g2, final Rectangle2D plotArea, final double value,
final int cat, final double startAngle, final double extent) {
super.drawLabel(g2, plotArea, value, cat, startAngle, extent);
final FontRenderContext frc = g2.getFontRenderContext();
final double[] transformed = new double[2];
final double[] transformer = new double[2];
final Arc2D arc1 = new Arc2D.Double(plotArea, startAngle, 0, Arc2D.OPEN);
for (int i = 1; i <= ticks; i++) {
final Point2D point1 = arc1.getEndPoint();
final double deltaX = plotArea.getCenterX();
final double deltaY = plotArea.getCenterY();
double labelX = point1.getX() - deltaX;
double labelY = point1.getY() - deltaY;
final double scale = ((double) i / (double) ticks);
final AffineTransform tx = AffineTransform.getScaleInstance(scale, scale);
final AffineTransform pointTrans = AffineTransform.getScaleInstance(scale + TICK_SCALE, scale + TICK_SCALE);
transformer[0] = labelX;
transformer[1] = labelY;
pointTrans.transform(transformer, 0, transformed, 0, 1);
final double pointX = transformed[0] + deltaX;
final double pointY = transformed[1] + deltaY;
tx.transform(transformer, 0, transformed, 0, 1);
labelX = transformed[0] + deltaX;
labelY = transformed[1] + deltaY;
double rotated = (PERPENDICULAR);
AffineTransform rotateTrans = AffineTransform.getRotateInstance(Math.toRadians(rotated), labelX, labelY);
transformer[0] = pointX;
transformer[1] = pointY;
rotateTrans.transform(transformer, 0, transformed, 0, 1);
final double x1 = transformed[0];
final double y1 = transformed[1];
rotated = (-PERPENDICULAR);
rotateTrans = AffineTransform.getRotateInstance(Math.toRadians(rotated), labelX, labelY);
rotateTrans.transform(transformer, 0, transformed, 0, 1);
final Composite saveComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
g2.draw(new Line2D.Double(transformed[0], transformed[1], x1, y1));
if (startAngle == this.getStartAngle()) {
final String label = format.format(((double) i / (double) ticks) * this.getMaxValue());
final Rectangle2D labelBounds = getLabelFont().getStringBounds(label, frc);
final LineMetrics lm = getLabelFont().getLineMetrics(label, frc);
final double ascent = lm.getAscent();
if (Math.abs(labelX - plotArea.getCenterX()) < THRESHOLD) {
labelX += valueLabelGap;
labelY += ascent / (float) 2;
} else if (Math.abs(labelY - plotArea.getCenterY()) < THRESHOLD) {
labelY += valueLabelGap;
} else if (labelX >= plotArea.getCenterX()) {
if (labelY < plotArea.getCenterY()) {
labelX += valueLabelGap;
labelY += valueLabelGap;
} else {
labelX -= valueLabelGap;
labelY += valueLabelGap;
}
} else {
if (labelY > plotArea.getCenterY()) {
labelX -= valueLabelGap;
labelY -= valueLabelGap;
} else {
labelX += valueLabelGap;
labelY -= valueLabelGap;
}
}
g2.setPaint(getLabelPaint());
g2.setFont(getLabelFont());
g2.drawString(label, (float) labelX, (float) labelY);
}
g2.setComposite(saveComposite);
}
}
}
带刻度雷达图
/**
* @作者：Jcuckoo
* @日期：2008-12-9
* @版本：V 1.0
*/
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
MySpiderWebPlot spiderwebplot = new MySpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
带刻度蜘蛛网
/**
* @作者：Jcuckoo
* @日期：2008-12-9
* @版本：V 1.0
*/
public class MySpriderWebPlotTest {
public static void main(String args[]) {
JFrame jf = new JFrame();
jf.add(erstelleSpinnenDiagramm());
jf.pack();
jf.setVisible(true);
}
public static JPanel erstelleSpinnenDiagramm() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String group1 = "apple ";
dataset.addValue(5, group1, "w1");
dataset.addValue(6, group1, "w2");
dataset.addValue(4, group1, "w3");
dataset.addValue(2, group1, "w4");
dataset.addValue(5, group1, "w5");
dataset.addValue(5, group1, "w6");
dataset.addValue(5, group1, "w7");
dataset.addValue(8, group1, "w8");
String group2 = "orange ";
dataset.addValue(3, group2, "w1");
dataset.addValue(3, group2, "w2");
dataset.addValue(4, group2, "w3");
dataset.addValue(7, group2, "w4");
dataset.addValue(4, group2, "w5");
dataset.addValue(5, group2, "w6");
dataset.addValue(3, group2, "w7");
dataset.addValue(3, group2, "w8");
String group3 = "banana ";
dataset.addValue(4, group3, "w1");
dataset.addValue(5, group3, "w2");
dataset.addValue(2, group3, "w3");
dataset.addValue(5, group3, "w4");
dataset.addValue(6, group3, "w5");
dataset.addValue(6, group3, "w6");
dataset.addValue(4, group3, "w7");
dataset.addValue(4, group3, "w8");
MySpiderWebPlot spiderwebplot = new MySpiderWebPlot(dataset);
JFreeChart jfreechart = new JFreeChart("Test", TextTitle.DEFAULT_FONT,spiderwebplot, false);
LegendTitle legendtitle = new LegendTitle(spiderwebplot);
legendtitle.setPosition(RectangleEdge.BOTTOM);
jfreechart.addSubtitle(legendtitle);
ChartPanel chartpanel = new ChartPanel(jfreechart);
return chartpanel;
}
}
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