[Solved]-Remove data labels when ploting and exporting graphs-Highcharts

you need to move loop from callback, into chart / events / load.

chart: {
        events: {
            load: function () {
                var chart = this;

                $.each(chart.series, function (i, serie) {
                    $.each(serie.data, function (j, data) {

                            if (data.ybottom - data.ploty < 15) data.datalabel.hide();
                    });
                });
            }
        },
        renderto: 'chart',
        defaultseriestype: 'bar'
    },

example: http://jsfiddle.net/ha5xe/20