Question

I have built a chart and I am looking to add information bubbles (like the image below) to the bottom of the chart, is there anything in highcharts that I could use to do this?

Answer 1

You could use a scatter plot series to add dots at specific points. jsFiddle and code:

$(function () {
    var chart = new Highcharts.Chart({
        chart: {
            renderTo: 'container'
        },
        xAxis: {
            categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },
        yAxis : {
            min:0
        },
        series: [{
            type: 'line',
            data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4],
            name: 'Temperature'
        }, {
            type: 'scatter',
            data: [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10],
            name: 'Rainfall'
        }]
    });
});​

Edit:

You can set showInLegend to false to hide the scatter series from the legend, and you could add a tooltip function to display whatever info you want.