Convert many date and datetime formats as may be received from Microsoft Excel
Source:R/convert_to_date.R
convert_to_date.Rd
Convert many date and datetime formats as may be received from Microsoft Excel
Arguments
- x
The object to convert
- ...
Passed to further methods. Eventually may be passed to `excel_numeric_to_date()`, `base::as.POSIXct()`, or `base::as.Date()`.
- character_fun
A function to convert non-numeric-looking, non-NA values in `x` to POSIXct objects.
- string_conversion_failure
If a character value fails to parse into the desired class and instead returns `NA`, should the function return the result with a warning or throw an error?
- tz
The timezone for POSIXct output, unless an object is POSIXt already. Ignored for Date output.
Details
Character conversion checks if it matches something that looks like a Microsoft Excel numeric date, converts those to numeric, and then runs convert_to_datetime_helper() on those numbers. Then, character to Date or POSIXct conversion occurs via `character_fun(x, ...)` or `character_fun(x, tz=tz, ...)`, respectively.
See also
Other Date-time cleaning:
excel_numeric_to_date()
,
sas_numeric_to_date()
Examples
convert_to_date("2009-07-06")
#> [1] "2009-07-06"
convert_to_date(40000)
#> [1] "2009-07-06"
convert_to_date("40000.1")
#> [1] "2009-07-06"
# Mixed date source data can be provided.
convert_to_date(c("2020-02-29", "40000.1"))
#> [1] "2020-02-29" "2009-07-06"
convert_to_datetime(
c("2009-07-06", "40000.1", "40000", NA),
character_fun=lubridate::ymd_h, truncated=1, tz="UTC"
)
#> [1] "2009-07-06 00:00:00 UTC" "2009-07-06 02:24:00 UTC"
#> [3] "2009-07-06 00:00:00 UTC" NA