Highcharts - Keep Zero Centered on Y-Axis with Negative Values

Question

I have an area chart with negative values. Nothing insanely different from the example they give, but there\'s one twist: I\'d like to keep zero centered on the Y axis.

Answer 1

I know this is an old post, but thought I would post my solution anyway (which is inspired from the one macserv suggested above in the accepted answer) as it may help others who are looking for a similar solution:

tickPositioner: function (min, max) {
            var maxDeviation = Math.ceil(Math.max(Math.abs(this.dataMax), Math.abs(this.dataMin)));
            return this.getLinearTickPositions(this.tickInterval, -maxDeviation, maxDeviation);
        }