Dygraphs：如何仅回收主要的y轴空间

Question

我有一个带有隐藏的主y轴和可见的辅助y轴的堆叠图。我想回收仅由主y轴占据的空间怎么做？谢谢你的帮助。

我有以下代码：

g = new Dygraph(document.getElementById("graph"),
  // For possible data formats, see http://dygraphs.com/data.html
  // The x-values could also be dates, e.g. "2012/03/15"
  "X,Y,Z,S\n" +
  "1,0,3,1\n" +
  "2,2,6,13\n" +
  "3,4,8,11\n" +
  "4,6,9,5\n" +
  "5,8,9,4\n" +
  "6,10,8,7\n" +
  "7,12,6,1\n" +
  "8,14,3,9\n", {
    // options go here. See http://dygraphs.com/options.html
    legend: 'always',
    animatedZooms: false,
    series: {
      Y: {
        axis: 'y2'
      },
      Z: {
        axis: 'y2'
      },
      S: {
        axis: 'y2'
      }
    },
    //drawYAxis: false,
    axes: {
      y: {
        drawGrid: false,
        independentTicks: false
      },
      y2: {
        drawGrid: true,
        independentTicks: true
      }
    },

    stackedGraph: true
  });