如何动态添加新的图表类型到谷歌烛台图表

Question

这篇文章展示了如何添加相同的图表类型（线）How to add another data series to a Google chart

这一个不是真正的烛台图表Candlesticks is always on top of lines in combo chart google chart

真正的烛台不是combochart https://developers.google.com/chart/interactive/docs/gallery/candlestickchart

那么可以在真正的烛台谷歌图表中添加一条线和/或条形图吗？

Answer 1

使用series选项更改类型...

四个烛台列将被视为系列＃：0

请参阅以下工作代码段...

google.charts.load('current', {
  packages: ['corechart']
}).then(function () {
  var data = google.visualization.arrayToDataTable([
    ['Day', 'Candlestick', 'Begin', 'End', 'High'],
    ['Mon', 20, 28, 38, 45],
    ['Tue', 31, 38, 55, 66],
    ['Wed', 50, 55, 77, 80],
    ['Thu', 77, 77, 66, 50],
    ['Fri', 68, 66, 22, 15]
  ]);

  // add column for line, add data to rows...
  var colIndex = data.addColumn('number', 'Line');
  for (var i = 0; i < data.getNumberOfRows(); i++) {
    data.setValue(i, colIndex, data.getValue(i, 1));
  }

  var options = {
    height: 400,
    series: {
      1: {
        type: 'line'
      }
    }
  };

  var chart = new google.visualization.CandlestickChart(document.getElementById('chart_div'));
  chart.draw(data, options);
});

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>