real-time bubble chart (2)

xchart-demo/src/main/java/org/knowm/xchart/demo/charts/realtime/RealtimeChart04.java

+/**
+ * Copyright 2015-2016 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.realtime;
+
+import java.util.List;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+import javax.swing.JFrame;
+
+import org.knowm.xchart.BubbleChart;
+import org.knowm.xchart.XChartPanel;
+import org.knowm.xchart.demo.charts.ExampleChart;
+import org.knowm.xchart.style.Styler.ChartTheme;
+
+/**
+ * Real-time Bubble Chart
+ * <p>
+ * Demonstrates the following:
+ * <ul>
+ * <li>real-time chart updates
+ * <li>multiple series
+ * <li>Bubble chart
+ * <li>GGPlot2 chart
+ */
+public class RealtimeChart04 implements ExampleChart<BubbleChart> {
+
+  private List<Double> yData;
+  private List<Double> bubbleData;
+  public static final String SERIES_NAME = "series1";
+
+  public static void main(String[] args) {
+
+    // Setup the panel
+    final RealtimeChart04 realtimeChart04 = new RealtimeChart04();
+    final XChartPanel<BubbleChart> chartPanel = realtimeChart04.buildPanel();
+
+    // Schedule a job for the event-dispatching thread:
+    // creating and showing this application's GUI.
+    javax.swing.SwingUtilities.invokeLater(new Runnable() {
+
+      @Override
+      public void run() {
+
+        // Create and set up the window.
+        JFrame frame = new JFrame("XChart");
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.add(chartPanel);
+
+        // Display the window.
+        frame.pack();
+        frame.setVisible(true);
+      }
+    });
+
+    // Simulate a data feed
+    TimerTask chartUpdaterTask = new TimerTask() {
+
+      @Override
+      public void run() {
+
+        realtimeChart04.updateData();
+        chartPanel.updateSeries(SERIES_NAME, null, realtimeChart04.getyData(), realtimeChart04.getbubbleData());
+
+      }
+    };
+
+    Timer timer = new Timer();
+    timer.scheduleAtFixedRate(chartUpdaterTask, 0, 500);
+
+  }
+
+  public XChartPanel<BubbleChart> buildPanel() {
+
+    return new XChartPanel<BubbleChart>(getChart());
+  }
+
+  @Override
+  public BubbleChart getChart() {
+
+    yData = getRandomData(5);
+    bubbleData = getRandomData(5);
+
+    // Create Chart
+    BubbleChart chart = new BubbleChart(500, 400, ChartTheme.GGPlot2);
+    chart.setTitle("Real-time Bubble Chart");
+    chart.setXAxisTitle("X");
+    chart.setYAxisTitle("Y");
+
+    chart.addSeries(SERIES_NAME, null, yData, bubbleData);
+
+    return chart;
+  }
+
+  private List<Double> getRandomData(int numPoints) {
+
+    List<Double> data = new CopyOnWriteArrayList<Double>();
+    for (int i = 0; i < numPoints; i++) {
+      data.add(Math.random() * 100);
+    }
+    return data;
+  }
+
+  public void updateData() {
+
+    // Get some new data
+    List<Double> newData = getRandomData(1);
+    yData.addAll(newData);
+    // Limit the total number of points
+    while (yData.size() > 20) {
+      yData.remove(0);
+    }
+
+    // Get some new data
+    newData = getRandomData(1);
+    bubbleData.addAll(newData);
+    // Limit the total number of points
+    while (bubbleData.size() > 20) {
+      bubbleData.remove(0);
+    }
+
+  }
+
+  public List<Double> getyData() {
+
+    return yData;
+  }
+
+  public List<Double> getbubbleData() {
+
+    return bubbleData;
+  }
+}