import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import org.knowm.xchart.SwingWrapper;
import org.knowm.xchart.XYChart;
import org.knowm.xchart.XYChartBuilder;
import org.knowm.xchart.XYSeries;
import org.knowm.xchart.XYSeries.XYSeriesRenderStyle;
import org.knowm.xchart.style.Styler;
import org.knowm.xchart.style.markers.SeriesMarkers;

/**
 * Gaussian Blob
 *
 * <p>Demonstrates the following:
 *
 * <ul>
 *   <li>ChartType.Scatter
 *   <li>Series data as a Set
 *   <li>Setting marker size
 *   <li>Formatting of negative numbers with large magnitude but small differences
 *   <li>YAxis position on Right
 *   <li>Cross type series marker
 */
public class xchart_scatter {

  public static void main(String[] args) {

    XYChart chart = getChart();
    new SwingWrapper<>(chart).displayChart();
  }

  static public XYChart getChart() {

    // Create Chart
    XYChart chart = new XYChartBuilder().width(600).height(400).build();

    // Customize Chart
    chart.getStyler().setDefaultSeriesRenderStyle(XYSeriesRenderStyle.Scatter);
    chart.getStyler().setChartTitleVisible(false);
    chart.getStyler().setLegendVisible(false);
    chart.getStyler().setMarkerSize(16);
    chart.getStyler().setYAxisGroupPosition(0, Styler.YAxisPosition.Right);
    // Series
    List<Double> xData = new LinkedList<Double>();
    List<Double> yData = new LinkedList<Double>();
    Random random = new Random();
    int size = 1000;
    for (int i = 0; i < size; i++) {
      xData.add(random.nextGaussian() / 1000);
      yData.add(-1000000 + random.nextGaussian());
    }
    XYSeries series = chart.addSeries("Gaussian Blob", xData, yData);
    series.setMarker(SeriesMarkers.CROSS);

    return chart;
  }

}