Java ChartFactory.createPieChart3D方法代碼示例

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
public PieChart() {
    DefaultPieDataset data = getDataSet();
    JFreeChart chart = ChartFactory.createPieChart3D("水果產量", data, true, false, false);
    //設置百分比
    PiePlot pieplot = (PiePlot) chart.getPlot();
    DecimalFormat df = new DecimalFormat("0.00%");//獲得一個DecimalFormat對象，主要是設置小數問題
    NumberFormat nf = NumberFormat.getNumberInstance();//獲得一個NumberFormat對象
    StandardPieSectionLabelGenerator sp1 = new StandardPieSectionLabelGenerator("{0}  {2}", nf, df);//獲得StandardPieSectionLabelGenerator對象
    pieplot.setLabelGenerator(sp1);//設置餅圖顯示百分比

    //沒有數據的時候顯示的內容
    pieplot.setNoDataMessage("無數據顯示");
    pieplot.setCircular(false);
    pieplot.setLabelGap(0.02D);

    pieplot.setIgnoreNullValues(true);//設置不顯示空值
    pieplot.setIgnoreZeroValues(true);//設置不顯示負值
    frame1 = new ChartPanel(chart, true);
    chart.getTitle().setFont(new Font("宋體", Font.BOLD, 20));//設置標題字體
    PiePlot piePlot = (PiePlot) chart.getPlot();//獲取圖表區域對象
    piePlot.setLabelFont(new Font("宋體", Font.BOLD, 10));//解決亂碼
    chart.getLegend().setItemFont(new Font("黑體", Font.BOLD, 10));
}
 

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
/**
 * Creates 3D pie chart with OS usage statistics.
 * 
 * @return Filled 3D pie chart.
 */
public JFreeChart getChart() {
    DefaultPieDataset data = new DefaultPieDataset();

    data.setValue("Mac", 29);
    data.setValue("Windows", 51);
    data.setValue("Linux", 20);

    JFreeChart chart = ChartFactory.createPieChart3D("", data);
    PiePlot3D plot = (PiePlot3D) chart.getPlot();
    plot.setStartAngle(290);
    plot.setDirection(Rotation.CLOCKWISE);
    plot.setForegroundAlpha(0.5f);

    return chart;
}
 

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
@Override
public JFreeChart createChart(PieDataset pieDataSet, boolean createLegend) {
	JFreeChart chart = ChartFactory.createPieChart3D(null, pieDataSet, createLegend, // legend
			true, false);

	PiePlot3D plot = (PiePlot3D) chart.getPlot();
	plot.setForegroundAlpha(0.5f);

	return chart;
}
 

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
/**
 * Creates 3D pie chart form given list of {@link PollOption} objects.
 * 
 * @param results List of {@link PollOption} objects.
 * @return Filled 3D pie chart.
 */
public static JFreeChart getChart(List<PollOption> results) {
    DefaultPieDataset result = new DefaultPieDataset();
    for (PollOption r : results) {
        result.setValue(r.getName(), r.getVotes());
    }

    JFreeChart chart = ChartFactory.createPieChart3D("", result);
    PiePlot3D plot = (PiePlot3D) chart.getPlot();
    plot.setStartAngle(290);
    plot.setDirection(Rotation.CLOCKWISE);
    plot.setForegroundAlpha(0.5f);
    return chart;
}
 

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
/**
 * Creates 3D pie chart form given list of {@link Band}.
 * 
 * @param results List of results.
 * @return Filled 3D pie chart.
 */
public static JFreeChart getChart(List<Band> results) {
    DefaultPieDataset data = new DefaultPieDataset();
    for (Band result : results) {
        data.setValue(result.getName(), result.getVotes());
    }
    JFreeChart chart = ChartFactory.createPieChart3D("", data);
    PiePlot3D plot = (PiePlot3D) chart.getPlot();
    plot.setStartAngle(290);
    plot.setDirection(Rotation.CLOCKWISE);
    plot.setForegroundAlpha(0.5f);

    return chart;
}
 

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
/**
 * Creates a pie chart.
 *
 * @param dataset  the dataset.
 * 
 * @return The pie chart.
 */
private static JFreeChart createPieChart3D(PieDataset dataset) {

    return ChartFactory.createPieChart3D(
        "Pie Chart",  // chart title
        dataset,      // data
        true,         // include legend
        true,
        false
    );
}
 

import org.jfree.chart.ChartFactory; //導入方法依賴的package包/類
/**
 * 創建餅狀圖的步驟如下： 1、創建一個餅狀的實例，注意傳參的格式，還有需要注意的是此時的數據集應該是defaultPieDataset，
 * 而不是CategoryDataset格式 2、獲得餅狀圖的所在區域 3、設置兩個格式化的數據格式，為後麵的床架餅狀圖的實例做基礎
 * 4、細節方麵是對無數據、零值、負值等情況的處理 5、最後就是設置在出現漢字的地方進行字體內容的設置了（同樣的，這是為了防止出現亂碼的狀況）
 */
public void init() {
	DefaultPieDataset dataset = getDataset();

	JFreeChart chart = ChartFactory.createPieChart3D("The proportion of the book", dataset, true, false, false);

	PiePlot piePlot = (PiePlot) chart.getPlot();
	DecimalFormat df = new DecimalFormat("0.00%");
	NumberFormat nf = NumberFormat.getInstance();

	// 獲得StandardPieSectionLabelGenerator對象,生成的格式，{0}表示section名，
	StandardPieSectionLabelGenerator generator = new StandardPieSectionLabelGenerator("{0} {2}",
			// {1}表示section的值，{2}表示百分比。可以自定義
			nf, df);
	piePlot.setLabelGenerator(generator);// 設置百分比
	piePlot.setLabelFont(new Font("黑體", Font.ITALIC, 20));

	// 當餅狀圖內沒有有數據時，作如下數據中設置
	piePlot.setNoDataMessage("此時並沒有任何數據可用");
	piePlot.setCircular(false);
	piePlot.setLabelGap(0.02D);

	piePlot.setIgnoreNullValues(true);// 設置不顯示空位
	piePlot.setIgnoreZeroValues(true);// 設置不顯示負值或零值

	panel = new ChartPanel(chart, true);
	chart.getTitle().setFont(new Font("微軟雅黑", Font.PLAIN, 25));
	chart.getLegend().setItemFont(new Font("微軟雅黑", Font.PLAIN, 16));

	File dir = new File("images\\");
	if (!dir.exists()) {
		dir.mkdir();
	}
	String fName = String.valueOf(System.currentTimeMillis()) + "pie.png";
	File file = new File("images\\", fName);
	try {
		ChartUtilities.saveChartAsPNG(file, chart, 550, 400);
	} catch (IOException e) {

		e.printStackTrace();
	}

}