PieChart03.java

/**
 * Copyright 2015-2017 Knowm Inc. (http://knowm.org) and contributors.
 * Copyright 2011-2015 Xeiam LLC (http://xeiam.com) and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.knowm.xchart.demo.charts.pie;

import org.knowm.xchart.PieChart;
import org.knowm.xchart.PieChartBuilder;
import org.knowm.xchart.SwingWrapper;
import org.knowm.xchart.demo.charts.ExampleChart;
import org.knowm.xchart.style.Styler.ChartTheme;

/**
 * Pie Chart GGPlot2 Theme
 * <p>
 * Demonstrates the following:
 * <ul>
 * <li>Pie Chart
 * <li>PieChartBuilder
 * <li>GGPlot2 Theme
 * <li>Setting start angle
 */
public class PieChart03 implements ExampleChart<PieChart> {

  public static void main(String[] args) {

    ExampleChart<PieChart> exampleChart = new PieChart03();
    PieChart chart = exampleChart.getChart();
    new SwingWrapper<PieChart>(chart).displayChart();
  }

  @Override
  public PieChart getChart() {

    // Create Chart
    PieChart chart = new PieChartBuilder().width(800).height(600).title("Pie Chart GGPlot2 Theme").theme(ChartTheme.GGPlot2).build();

    // Customize Chart
    chart.getStyler().setLegendVisible(false);
    chart.getStyler().setAnnotationDistance(1.15);
    chart.getStyler().setPlotContentSize(.7);
    chart.getStyler().setStartAngleInDegrees(90);

    // Series
    chart.addSeries("Prague", 2);
    chart.addSeries("Dresden", 4);
    chart.addSeries("Munich", 34);
    chart.addSeries("Hamburg", 22);
    chart.addSeries("Berlin", 29);

    return chart;
  }
}