How to set specific y-axis label points in dygraphs?

Question

Dygraphs ordinarily automatically picks Y- (and X-) axis labeling points based on the size of your axes, the size of the labels, etc. In some cases, it picks labeling points

Answer 1

If you just want to add a label to those that are auto-generated

g = new Dygraph(div, data, {
    axes: {
      y: {
        ticker: function(min, max, pixels, opts, dygraph, vals) {
          var your_value = 7.5;

          //Get auto-generated tickers (numericTicks is the default ticker generator)
          var tickers = Dygraph.numericTicks(min, max, pixels, opts, dygraph, vals);
          tickers.push({v: your_value, label: 'Custom Label'}); //Insert your label

          return tickers;
        }
      }
    }
  });