Google ComboChart中当前数据的平均线

嗨，大家好我正在使用组合图表，我试图获得所有值的平均值，并在图表上显示一条线来表示每个代理的平均值。

我已经做了一些挖掘，有一个资源，我尝试使用，但它是抛出错误，我一直在努力寻找解决方案。

下面是一个JSFiddle示例，说明了我的图表的外观，但我需要每个代理的所有值的平均线，并显示每个代理的平均线。

的jsfiddle

以下是JS Fiddle的JS代码：

jQuery(function($) { google.charts.load('current', { callback: drawChartAverage, packages: ['corechart'] }); function drawChartAverage() { var result = [ ['Agents', 'Minutes'], ['1', 44], ['2', 22], ['3', 11], ['4', 34]]; var options = { title: 'Average Minutes cross Agents', vAxis: { title: 'Minutes' }, hAxis: { title: 'Agent' }, seriesType: 'bars', series: { 1: { type: 'line' } } }; var chartdata = new google.visualization.arrayToDataTable(result); var chartAvg = new google.visualization.ComboChart(document.getElementById('chartAvg')); chartAvg.draw(chartdata, options); } }) 

我需要它看起来像我试图使用的例子 ，但没有喜欢这样做。

但是，让你知道我想做什么！

Answer 1

使用提供的示例……

 google.charts.load('44', { callback: drawChartAverage, packages: ['corechart'] }); function drawChartAverage() { var result = [ ['Agents', 'Minutes'], ['1', 44], ['2', 22], ['3', 11], ['4', 34] ]; var chartdata = new google.visualization.arrayToDataTable(result); // Create a DataView that adds another column which is all the same (empty-string) to be able to aggregate on. var viewWithKey = new google.visualization.DataView(chartdata); viewWithKey.setColumns([0, 1, { type: 'string', label: '', calc: function (d, r) { return '' } }]) // Aggregate the previous view to calculate the average. This table should be a single table that looks like: // [['', AVERAGE]], so you can get the Average with .getValue(0,1) var group = google.visualization.data.group(viewWithKey, [2], [{ column: 1, id: 'avg', label: 'average', aggregation: google.visualization.data.avg, 'type': 'number' }]); // Create a DataView where the third column is the average. var dv = new google.visualization.DataView(chartdata); dv.setColumns([0, 1, { type: 'number', label: 'average', calc: function (dt, row) { // round average up / down return Math.round(group.getValue(0, 1)); } }]); var options = { title: 'Average Minutes cross Agents', vAxis: { title: 'Minutes' }, hAxis: { title: 'Agent' }, seriesType: 'bars', series: { 1: { type: 'line' } } }; var chartAvg = new google.visualization.ComboChart(document.getElementById('chartAvg')); chartAvg.draw(dv, options); }