Dynamically draw marker on last point in highcharts

Question

I want to draw a marker on the last point. Data source is dynamic. Have a look at following code

$(function() {

    $(\"#btn\").click(function() {
        v         


        

Answer 1

 $("#btn").click(function() {
    var l = chart.series[0].points.length;
    var p = chart.series[0].points[l - 1];
    p.update({
        marker: {
            symbol: 'square',
            fillColor: "#A0F",
            lineColor: "A0F0",
            radius: 5
        }
    });
    a = 1;

});

solution @ http://jsfiddle.net/jugal/zJZSx/

Also tidied up your code a little, removed the removal of point before adding one at the end, highcharts supports it inbuilt with the third param to addPoint as true, which denotes shift series, which removes first point and then adds the given point.

I didn't really understand what the a vv etc were, but well i didn't bother much either. I think this is enough based on what you asked for.