Highstock - display number of week

Question

How can I show the week number for the date in Highstock (not Highcharts!)?

My SQL looks like this

select unix_timestamp(date)*1000 week         


        

Answer 1

You can add it using dateFormats, for example: http://jsfiddle.net/EkAnm/

Highcharts.dateFormats = {
    W: function (timestamp) {
        var date = new Date(timestamp),
            day = date.getUTCDay() == 0 ? 7 : date.getUTCDay(),
            dayNumber;
        date.setDate(date.getUTCDate() + 4 - day);
        dayNumber = Math.floor((date.getTime() - new Date(date.getUTCFullYear(), 0, 1, -6)) / 86400000);
        return 1 + Math.floor(dayNumber / 7);

    }
}

Then use it in or format or dateFormat():

xAxis: {
        tickInterval: 7 * 24 * 36e5, // one week
        labels: {
            format: '{value:Week %W/%Y}'
        }
    },