GWT Highcharts - 基本柱形图

以下是一幅柱形图示例。

我们在 Highcharts 配置语法 章节中已看到用于绘制图表的配置。现在，我们来看一幅基本柱形图示例。我们还将了解其他配置。我们已更改 chart 中的 type 属性。

chart

将图表类型配置为基于“column”。**chart.type** 决定了图表中的系列类型。此处，默认值是“line”。

chart.setType(Type.COLUMN);

示例

HelloWorld.java

package com.tutorialspoint.client;

import org.moxieapps.gwt.highcharts.client.AxisTitle;
import org.moxieapps.gwt.highcharts.client.Chart;
import org.moxieapps.gwt.highcharts.client.Credits;
import org.moxieapps.gwt.highcharts.client.Legend;
import org.moxieapps.gwt.highcharts.client.Series.Type;
import org.moxieapps.gwt.highcharts.client.ToolTip;
import org.moxieapps.gwt.highcharts.client.ToolTipData;
import org.moxieapps.gwt.highcharts.client.ToolTipFormatter;
import org.moxieapps.gwt.highcharts.client.labels.DataLabels;
import org.moxieapps.gwt.highcharts.client.plotOptions.ColumnPlotOptions;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;

public class HelloWorld implements EntryPoint {
   public void onModuleLoad() {
      Chart chart = new Chart()  
         .setType(Type.COLUMN)  
         .setChartTitleText("Historic World Population by Region")  
         .setChartSubtitleText("Source: Wikipedia.org")  
         .setColumnPlotOptions(new ColumnPlotOptions()  
            .setDataLabels(new DataLabels()  
               .setEnabled(true)  
            )  
         )  
         .setLegend(new Legend()  
            .setLayout(Legend.Layout.VERTICAL)  
            .setAlign(Legend.Align.RIGHT)  
            .setVerticalAlign(Legend.VerticalAlign.TOP)  
            .setX(-100)  
            .setY(100)  
            .setFloating(true)  
            .setBorderWidth(1)  
            .setBackgroundColor("#FFFFFF")  
            .setShadow(true)  
         )  
         .setCredits(new Credits()  
            .setEnabled(false)  
         )  
         .setToolTip(new ToolTip()  
            .setFormatter(new ToolTipFormatter() {
               @Override
               public String format(ToolTipData toolTipData) {
                  return toolTipData.getSeriesName() + ": " + toolTipData.getYAsLong() +" million";  
               }
         }));
         chart.getXAxis()  
            .setCategories("Africa", "America", "Asia", "Europe", "Oceania");  
         chart.getYAxis()  
            .setAxisTitle(new AxisTitle()  
               .setText("Population (millions)")  
               .setAlign(AxisTitle.Align.HIGH)  
            );  
         chart.addSeries(chart.createSeries()  
            .setName("Year 1800")  
            .setPoints(new Number[] { 107, 31, 635, 203, 2 })  
         );  
         chart.addSeries(chart.createSeries()  
            .setName("Year 1900")  
            .setPoints(new Number[] { 133, 156, 947, 408, 6 })  
         );  
         chart.addSeries(chart.createSeries()  
            .setName("Year 2008")  
            .setPoints(new Number[] { 973, 914, 4054, 732, 34 })  
         );  
      RootPanel.get().add(chart);
   }
}

结果

验证结果。