score:2
Accepted answer
Look at the the series.addPoint method.
Your updateChart
function becomes:
function updateChart()
{
for (var source = 1; source <=3; source++)
{
var point = [
23,
Math.floor((Math.random() * 10*source) + 5+source*2),
source
];
Highcharts.charts[0].series[0].addPoint(point, false, true); // add the point, don't redraw and shift off a point
}
Highcharts.charts[0].redraw(); // 3 points added, now redraw
}
Update fiddle.
Source: stackoverflow.com
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