How to change tooltip valueSuffix after chart is rendered?

Question

I'm wondering is there any way to change valueSuffix of tooltip after chart is rendered?

I'm trying to do switch from metric units to imperial, so I need to change data, yAxis label and tooltip valueSuffix. It was simple for first two, but I didn't find anything about third, neither in docs (like yAxis update(..)), neither in google.

Tried this:

$('#sp_chart').highcharts().tooltip.options.valueSuffix = 'aaaa';

in

console.log($('#sp_chart').highcharts().tooltip.options.valueSuffix) 

it looks good, but didn't works when tooltip shows.

Answer 1

You can define a suffix in the series object, and use series update to modify this parameter.

series: [{
        tooltip:{
            valueSuffix: ' USD',
        },
        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]
    }]
/*...*/
    chart.series[0].update({
                tooltip:{
                valueSuffix: ' EUR',
            },
    });

Example: http://jsfiddle.net/Ujw8B/