GWT Google Charts 带数据标签气泡图

以下是带数据标签气泡图的示例。

我们已经在《GWT Google Charts 入门程序》章节中看到了用于绘制图表的基本步骤。现在，让我们看一个带数据标签气泡图的例子。

GWT Google Charts 带数据标签气泡图 配置

我们使用BubbleChart类来显示带数据标签气泡图。

// bubble chart
BubbleChart chart = new BubbleChart();

GWT Google Charts 带数据标签气泡图 示例

package com.yiidian.helloWorld.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.*;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.DOM;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.googlecode.gwt.charts.client.ChartLoader;
import com.googlecode.gwt.charts.client.ChartPackage;
import com.googlecode.gwt.charts.client.ColumnType;
import com.googlecode.gwt.charts.client.DataTable;
import com.googlecode.gwt.charts.client.corechart.*;
import com.googlecode.gwt.charts.client.options.HAxis;
import com.googlecode.gwt.charts.client.options.VAxis;

public class HelloWorld implements EntryPoint {
    private BubbleChart chart;

    private void initialize() {
        ChartLoader chartLoader = new ChartLoader(ChartPackage.CORECHART);
        chartLoader.loadApi(new Runnable() {
            public void run() {
                // Create and attach the chart
                chart = new BubbleChart();
                RootPanel.get().add(chart);
                draw();
            }
        });
    }
    private void draw() {
        DataTable data = DataTable.create();
        data.addColumn(ColumnType.STRING, "Id");
        data.addColumn(ColumnType.NUMBER, "Age");
        data.addColumn(ColumnType.NUMBER, "Weight");

        data.addRow("Robert", 8, 12);
        data.addRow("Mohan", 4, 8.5);
        data.addRow("Ramesh", 11, 14);
        data.addRow("Julie", 4, 5);
        data.addRow("Sohan", 3, 3.5);
        data.addRow("Karim", 6.5, 7);

        BubbleChartOptions options = BubbleChartOptions.create();
        options.setTitle("Age vs Weight");

        // Draw the chart
        chart.draw(data,options);
        chart.setWidth("600px");
        chart.setHeight("400px");
    }
    public void onModuleLoad() {
        initialize();
    }
}

输出结果为：