turn unitRange * this.bounds.range + this.bounds.min;
    },

    /**
     * Automatically set the y-axis bounds from the range of values of all
     * series in a list.
     *
     * See the description of autoSetFromRange for the optional configuration
     * argument flags.
     */
    autoSetFromSeries(series, opt_config) {
      const range = new tr.b.math.Range();
      series.forEach(function(s) {
        range.addRange(s.range);
      }, this);
      this.autoSetFromRange(range, opt_config);
    },
