Can I add an "average" line to Highcharts Chart?

Question

I'm trying to recreate a chart (the one below) using Highcharts. I'm using a basic bar chart, and I'm wondering if there is a way to get a vertical line showing the average of all the bars? I have the value calculated, I just need it to display as the picture shows. Can I do this using Highcharts?

Answer 1

Yes. You can add it as a plotline, like this:

yAxis: {
    // ...Options
    plotLines: [{
        color: 'red',
        value: '15', // Insert your average here
        width: '1',
        zIndex: 4 // To not get stuck below the regular plot lines or series
    }]
}

See this JSFiddle demonstration.