[Solved]-Highstock shared tooltip multiple series - show data for line when not on point-Highcharts

you will need to use a formatter to calculate the values in the expanded step as to account for the lower resolution.

docs: http://api.highcharts.com/highstock#tooltip.formatter

example:

$(function () {
$('#container').highcharts('stockchart', {

    tooltip: {
        formatter: function () {
            var s = '<b>' + highcharts.dateformat('%a, %b %e, %y', this.x) + '</b>';

            $.each(this.points, function () {
                s += '<br/>1 usd = ' + this.y + ' eur';
            });

            return s;
        }
    },

    rangeselector: {
        selected: 1
    },

    series: [{
        name: 'usd to eur',
        data: usdeur
    }]
});

});

p.s. - if i could see a sample data set (in json), i'll be able to calculate this.