R: Guess possible date-times formats from a character vector

guess_formats {lubridate} | R Documentation

## Guess possible date-times formats from a character vector

### Description

Guess possible date-times formats from a character vector

### Usage

    guess_formats(x, orders, locale = Sys.getlocale("LC_TIME"),
      preproc_wday = TRUE, print_matches = FALSE)

### Arguments

`x` | input vector of date-times
`orders` | format orders to look for. See examples.
`locale` | locale to use, default to the current locale
`preproc_wday` | whether to preprocess week days names. Internal optimization used by ymd_hms family of functions. If TRUE, weekdays are substituted with this format explicitly.
`print_matches` | for development purpose mainly. If TRUE prints a matrix of matched templates.

### Value

a vector of matched formats

### Examples

    x <- c('February 20th 1973',
           "february  14, 2004",
           "Sunday, May 1, 2000",
           "Sunday, May 1, 2000",
           "february  14, 04",
           'Feb 20th 73',
           "January 5 1999 at 7pm",
           "jan 3 2010",
           "Jan 1, 1999",
           "jan 3   10",
           "01 3 2010",
           "1 3 10",
           '1 13 89',
           "5/27/1979",
           "12/31/99",
           "DOB:12/11/00",
           "-----------",
           'Thu, 1 July 2004 22:30:00',
           'Thu, 1st of July 2004 at 22:30:00',
           'Thu, 1July 2004 at 22:30:00',
           'Thu, 1July2004 22:30:00',
           'Thu, 1July04 22:30:00',
           "21 Aug 2011, 11:15:34 pm",
           "-----------",
           "1979-05-27 05:00:59",
           "1979-05-27",
           "-----------",
           "3 jan 2000",
           "17 april 85",
           "27/5/1979",
           '20 01 89',
           '00/13/10',
           "-------",
           "14 12 00",
           "03:23:22 pm")

    guess_formats(x, "BdY")
    guess_formats(x, "Bdy")
    ## m also matches b and B; y also matches Y
    guess_formats(x, "mdy", print_matches = TRUE)

    ## T also matches IMSp order
    guess_formats(x, "T", print_matches = TRUE)

    ## b and B are equivalent and match, both, abreviated and full names
    guess_formats(x, c("mdY", "BdY", "Bdy", "bdY", "bdy"), print_matches = TRUE)
    guess_formats(x, c("dmy", "dbY", "dBy", "dBY"), print_matches = TRUE)

    guess_formats(x, c("dBY HMS", "dbY HMS", "dmyHMS", "BdY H"), print_matches = TRUE)

    guess_formats(x, c("ymd HMS"), print_matches = TRUE)

[Package lubridate version 1.7.4 Index]