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Equal-width intervals for dates or datetimes

Source: R/breaks.R
brk_width-for-datetime.Rd

brk_width() can be used with time interval classes from base R or the lubridate package.

Usage

# S3 method for Duration
brk_width(width, start)

Arguments

width

A scalar difftime, Period or Duration object.

start

A scalar of class Date or POSIXct. Can be omitted.

Details

If width is a Period, lubridate::add_with_rollback() is used to calculate the widths. This can be useful for e.g. calendar months.

Examples


if (requireNamespace("lubridate")) {
  year2001 <- as.Date("2001-01-01") + 0:364
  tab_width(year2001, months(1),
        labels = lbl_discrete(" to ", fmt = "%e %b %y"))
}
#>  1 Jan 01 to 31 Jan 01  1 Feb 01 to 28 Feb 01  1 Mar 01 to 31 Mar 01 
#>                     31                     28                     31 
#>  1 Apr 01 to 30 Apr 01  1 May 01 to 31 May 01  1 Jun 01 to 30 Jun 01 
#>                     30                     31                     30 
#>  1 Jul 01 to 31 Jul 01  1 Aug 01 to 31 Aug 01  1 Sep 01 to 30 Sep 01 
#>                     31                     31                     30 
#>  1 Oct 01 to 31 Oct 01  1 Nov 01 to 30 Nov 01  1 Dec 01 to 31 Dec 01 
#>                     31                     30                     31