How to get highcharts dates in the x axis?

问题

Is there a standard way to get dates on the x-axis for Highcharts? Can't find it in their documentation: http://www.highcharts.com/ref/#xAxis--type

When my time range is large enough, it shows dates. However, when the time range isn't large enough, it just shows hours, like this:

This is less than ideal... if it could show a date and time in this case, that'd be great. Anyone know how?

回答1:

Highcharts will automatically try to find the best format for the current zoom-range. This is done if the xAxis has the type 'datetime'. Next the unit of the current zoom is calculated, it could be one of:

second
minute
hour
day
week
month
year

This unit is then used find a format for the axis labels. The default patterns are:

second: '%H:%M:%S',
minute: '%H:%M',
hour: '%H:%M',
day: '%e. %b',
week: '%e. %b',
month: '%b \'%y',
year: '%Y'

If you want the day to be part of the "hour"-level labels you should change the dateTimeLabelFormats option for that level include %d or %e. These are the available patters:

%a: Short weekday, like 'Mon'.
%A: Long weekday, like 'Monday'.
%d: Two digit day of the month, 01 to 31.
%e: Day of the month, 1 through 31.
%b: Short month, like 'Jan'.
%B: Long month, like 'January'.
%m: Two digit month number, 01 through 12.
%y: Two digits year, like 09 for 2009.
%Y: Four digits year, like 2009.
%H: Two digits hours in 24h format, 00 through 23.
%I: Two digits hours in 12h format, 00 through 11.
%l (Lower case L): Hours in 12h format, 1 through 11.
%M: Two digits minutes, 00 through 59.
%p: Upper case AM or PM.
%P: Lower case AM or PM.
%S: Two digits seconds, 00 through 59

http://api.highcharts.com/highcharts#xAxis.dateTimeLabelFormats

回答2:

Check this sample out from the Highcharts API.

Replace this

return Highcharts.dateFormat('%a %d %b', this.value);

With this

return Highcharts.dateFormat('%a %d %b %H:%M:%S', this.value);

Look here about the dateFormat() function.

Also see - tickInterval and pointInterval

回答3:

You write like this-:

xAxis: {
        type: 'datetime',
        dateTimeLabelFormats: {
           day: '%d %b %Y'    //ex- 01 Jan 2016
        }
}

also check for other datetime format

http://api.highcharts.com/highcharts#xAxis.dateTimeLabelFormats

来源：https://stackoverflow.com/questions/7101464/how-to-get-highcharts-dates-in-the-x-axis

标签

javascript

Highcharts