import org.knowm.xchart.SwingWrapper;
import org.knowm.xchart.XYChart;
import org.knowm.xchart.XYChartBuilder;
import org.knowm.xchart.XYSeries.XYSeriesRenderStyle;
import org.knowm.xchart.style.Styler.LegendPosition;
import org.knowm.xchart.VectorGraphicsEncoder;
import org.knowm.xchart.VectorGraphicsEncoder.VectorGraphicsFormat;

/**
 * Area Chart with 3 series
 *
 * Demonstrates the following:
 *
 * 

 *   Area Chart
 *   Place legend at Inside-NE position
 *   
ChartBuilder
 */
public class xchart_area {

  public static void main(String[] args) throws Exception   {

    XYChart chart = getChart("Area");
    new SwingWrapper(chart).displayChart();
    // Save it
    VectorGraphicsEncoder.saveVectorGraphic(chart, "Area", VectorGraphicsFormat.PDF);

}

 
  public static XYChart getChart(String name) {

    // Create Chart
    XYChart chart =
        new XYChartBuilder()
            .width(800)
            .height(600)
            .title(name)
            .xAxisTitle("X")
            .yAxisTitle("Y")
            .build();

    // Customize Chart
    chart.getStyler().setLegendPosition(LegendPosition.InsideNE);
    chart.getStyler().setAxisTitlesVisible(false);
    chart.getStyler().setDefaultSeriesRenderStyle(XYSeriesRenderStyle.Area);

    // Series
    chart.addSeries("a", new double[] {0, 3, 5, 7, 9}, new double[] {-3, 5, 9, 6, 5});
    chart.addSeries("b", new double[] {0, 2, 4, 6, 9}, new double[] {-1, 6, 4, 0, 4});
    chart.addSeries("c", new double[] {0, 1, 3, 8, 9}, new double[] {-2, -1, 1, 0, 1});

    return chart;
  }

}