9

我一直在尝试为堆积条形图获取自定义工具提示。

var data = new google.visualization.DataTable();
data.addColumn('string', 'Units');
data.addColumn('number', '1');
data.addColumn('number', '2');
data.addColumn('number', '3');
data.addColumn('number', '4');

_1 = 0.123
_2 = 0.23
_3 = 0.3
_4 = 0

data.addRow([_units, _1, _2, _3, _4,]);

var options = {
        isStacked: true,
        height: 150,
        chartArea: { height: 50 },
        legend: { position: 'top' },
};

bchart = new google.visualization.BarChart(bcontainer);
bchart.draw(data, options);

那么我的问题是如何为每个：_1、_2、_3、_4 创建一个工具提示？

谢谢

4

1 回答 1

16

这在DataTable Roles下的 Google 文档中有所介绍

在条形图文档中，它在此处解释了该图表可用的角色

您需要做的是向您的数据添加额外的列并添加 {role: tooltip}，该列显示您希望工具提示说的内容。

例如：

  var data = new google.visualization.DataTable();
  data.addColumn('string', 'Year');
  data.addColumn('number', 'Sales');
  data.addColumn({type: 'string', role: 'tooltip'});
  data.addColumn('number', 'Expenses');
  data.addColumn({type: 'string', role: 'tooltip'});
  data.addRows([
    ['2004', 1000, '1M$ sales in 2004', 400,  '$0.4M expenses in 2004'],
    ['2005', 1170, '1.17M$ sales in 2005', 460, '$0.46M expenses in 2005'],
    ['2006', 660,  '.66$ sales in 2006', 1120, '$1.12M expenses in 2006'],
    ['2007', 1030, '1.03M$ sales in 2007', 540, '$0.54M expenses in 2007']
  ]);

最终代码将如下所示：

function drawVisualization() {
  // Create and populate the data table.
  var data = new google.visualization.DataTable();
  data.addColumn('string', 'Year');
  data.addColumn('number', 'Sales');
  data.addColumn({type: 'string', role: 'tooltip'});
  data.addColumn('number', 'Expenses');
  data.addColumn({type: 'string', role: 'tooltip'});
  data.addRows([
    ['2004', 1000, '1M$ sales in 2004', 400,  '$0.4M expenses in 2004'],
    ['2005', 1170, '1.17M$ sales in 2005', 460, '$0.46M expenses in 2005'],
    ['2006', 660,  '.66$ sales in 2006', 1120, '$1.12M expenses in 2006'],
    ['2007', 1030, '1.03M$ sales in 2007', 540, '$0.54M expenses in 2007']
  ]);

  // Create and draw the visualization.
  new google.visualization.BarChart(document.getElementById('visualization')).
      draw(data,
           {title:"Yearly Coffee Consumption by Country",
            isStacked: true,
            width:600, height:400,
            vAxis: {title: "Year"},
            hAxis: {title: "Sales"}}
      );
}

请参阅此处的示例。

于 2013-01-11T00:21:45.290 回答