How to show the value of all linked axes in tool tip in highcharts?

Question

I have linked two x axis to my master x axis and I want to be able to show all three axis in the tool tip. How can I achieve this?

Answer 1

Example how to get categories of all axes: http://jsfiddle.net/h295m/1/

Code:

        tooltip: {
            formatter: function() {
                var p = this.point,
                    s = p.series,
                    c = s.chart,
                    axes = c.xAxis,
                    aLen = axes.length,
                    i = 0,
                    str = '';

                for(i; i < aLen; i++){
                    str += axes[i].categories[p.x] + '<br>'; 
                }

                str += s.name + ': ' + p.y; 

                return str;
            }
        }