The bubble chart is a two-axis chart that draws bubbles for the data points in a series.
To create a bubble chart, we create the BubbleChart class, define horizontal and vertical axes, and add one or more series of data using the XYChart.Data class.
/*// w w w. j a va2 s. c om * Copyright (c) 2011, 2012 Oracle and/or its affiliates. * All rights reserved. Use is subject to license terms. * * This file is available and licensed under the following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * - Neither the name of Oracle nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ //package bubblechartsample; import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.chart.BubbleChart; import javafx.scene.chart.NumberAxis; import javafx.scene.chart.XYChart; import javafx.scene.paint.Color; import javafx.stage.Stage; public class Main extends Application { @Override public void start(Stage stage) { stage.setTitle("Bubble Chart Sample"); final NumberAxis xAxis = new NumberAxis(1, 53, 4); final NumberAxis yAxis = new NumberAxis(0, 80, 10); final BubbleChart<Number,Number> blc = new BubbleChart<Number,Number>(xAxis,yAxis); xAxis.setLabel("Week"); xAxis.setTickLabelFill(Color.CHOCOLATE); xAxis.setMinorTickCount(4); yAxis.setLabel("Product Budget"); yAxis.setTickLabelFill(Color.CHOCOLATE); yAxis.setTickLabelGap(10); yAxis.setTickLabelFormatter( new NumberAxis.DefaultFormatter(yAxis,"$ ",null) ); blc.setTitle("Budget Monitoring"); XYChart.Series series1 = new XYChart.Series(); series1.setName("Product 1"); series1.getData().add(new XYChart.Data(3, 35, 2)); series1.getData().add(new XYChart.Data(12, 60, 1.8)); series1.getData().add(new XYChart.Data(15, 15, 7)); series1.getData().add(new XYChart.Data(22, 30, 2.5)); series1.getData().add(new XYChart.Data(28, 20, 1)); series1.getData().add(new XYChart.Data(35, 41, 5.5)); series1.getData().add(new XYChart.Data(42, 17, 9)); series1.getData().add(new XYChart.Data(49, 30, 1.8)); XYChart.Series series2 = new XYChart.Series(); series2.setName("Product 2"); series2.getData().add(new XYChart.Data(8, 15, 2)); series2.getData().add(new XYChart.Data(13, 23, 1)); series2.getData().add(new XYChart.Data(15, 45, 3)); series2.getData().add(new XYChart.Data(24, 30, 4.5)); series2.getData().add(new XYChart.Data(38, 78, 1)); series2.getData().add(new XYChart.Data(40, 41, 7.5)); series2.getData().add(new XYChart.Data(45, 57, 2)); series2.getData().add(new XYChart.Data(47, 23, 3.8)); Scene scene = new Scene(blc); blc.getData().addAll(series1, series2); //scene.getStylesheets().add("bubblechartsample/Chart.css"); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(args); } }
The NumberAxis.DefaultFormatter class adds prefixes and suffixes to the tick labels of the specified axis.
yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis,"$ ",null));
The following code lines specify the CHOCOLATE color for the tick labels.
xAxis.setTickLabelFill(Color.CHOCOLATE); yAxis.setTickLabelFill(Color.CHOCOLATE);
The code above generates the following result.
import javafx.application.Application; import javafx.collections.FXCollections; import javafx.collections.ObservableList; import javafx.scene.Scene; import javafx.scene.chart.BubbleChart; import javafx.scene.chart.NumberAxis; import javafx.scene.chart.XYChart; import javafx.scene.chart.XYChart.Series; import javafx.scene.layout.StackPane; import javafx.stage.Stage; //from ww w . j a v a 2 s .com public class Main extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage primaryStage) { NumberAxis xAxis = new NumberAxis(); NumberAxis yAxis = new NumberAxis(); xAxis.setAutoRanging(false); xAxis.setLowerBound(2011); xAxis.setUpperBound(2016); BubbleChart bubbleChart = new BubbleChart(xAxis, yAxis); bubbleChart.setData(getChartData()); bubbleChart.setTitle("Title"); primaryStage.setTitle("Chart example"); StackPane root = new StackPane(); root.getChildren().add(bubbleChart); primaryStage.setScene(new Scene(root, 400, 250)); primaryStage.show(); } private ObservableList<XYChart.Series<Integer, Double>> getChartData() { double aValue = 1.56; double bValue = 1.06; ObservableList<XYChart.Series<Integer, Double>> answer = FXCollections.observableArrayList(); Series<Integer, Double> aSeries = new Series<Integer, Double>(); Series<Integer, Double> bSeries = new Series<Integer, Double>(); aSeries.setName("A"); bSeries.setName("B"); for (int i = 2011; i < 2016; i++) { double diff = Math.random(); aSeries.getData().add(new XYChart.Data(i, aValue, diff)); aValue = aValue + 10*diff - 5; diff = Math.random(); bSeries.getData().add(new XYChart.Data(i, bValue, diff)); bValue = bValue + 10*diff - 5; diff = Math.random(); } answer.addAll(aSeries, bSeries); return answer; } }
The code above generates the following result.