[Chartjs]-Drawing line chart in chart.js placing dots only when value changes

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for (var i = 1; i <= data.datasets[0].data.length - 1; i++) 
    if (data.datasets[0].data[i - 1] === data.datasets[0].data[i])
        myChart.datasets[0].points[i].display = false;

where myChart is your chart object

Fiddle – http://jsfiddle.net/3tok57dL/

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