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谷歌条形图上的列数据标签

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我正在尝试将列数据标签添加到谷歌条形图 .

我已经按照API文档中给出的instructions进行了操作,这就是我得到的:

google.charts.load('current', {'packages':['bar']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
  ['Year', 'Searches'],
  ['1998', 9800],
  ['2000', 60000000],
  ['2007', 1200000000],
  ['2008', 1745000000],
  ['2009', 2610000000],
  ['2010', 3627000000],
  ['2011', 4717000000],
  ['2012', 5134000000],
  ['2013', 5922000000],
  ['2014', 5740000000]
]); 

var view = new google.visualization.DataView(data);
view.setColumns([0, 1,
               { calc: "stringify",
                 sourceColumn: 1,
                 type: "string",
                 role: "annotation" }]);        

var options = {
  chart: {
    title: 'Google searches',
    subtitle: 'Average searches per day 1998-2014',
  }
};

var chart = new google.charts.Bar(document.getElementById('columnchart_material'));

chart.draw(view, options);
}

我必须做错事,因为图表无法呈现任何数据标签 .

我究竟做错了什么?

https://jsfiddle.net/q9edfpte/1/

1 回答

  • 1

    我做了很多改变*,this one最终奏效了 .

    *更改: - 'packages':['bar'] - >'packages':['corechart'] - google.charts.Bar - > google.visualization.ColumnChart

    工作版(虽然需要美化):

    google.charts.load("current", {packages:['corechart']});
    google.charts.setOnLoadCallback(drawChart);
    function drawChart() {
      var data = google.visualization.arrayToDataTable([
        ['Year', 'Searches'],
        ['1998', 9800],
        ['2000', 60000000],
        ['2007', 1200000000],
        ['2008', 1745000000],
        ['2009', 2610000000],
        ['2010', 3627000000],
        ['2011', 4717000000],
        ['2012', 5134000000],
        ['2013', 5922000000],
        ['2014', 5740000000]
      ]); 
    
      var view = new google.visualization.DataView(data);
      view.setColumns([0, 1,
                     { calc: "stringify",
                       sourceColumn: 1,
                       type: "string",
                       role: "annotation" }]);        
    
      var options = {
          title: 'Google searches',
          subtitle: 'Average searches per day 1998-2014',
      };
    
    
    
      var chart = new google.visualization.ColumnChart(document.getElementById('columnchart_values'));
      chart.draw(view, options);
    }
    

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