Get and Set Month Values

Source: R/deprecated.R, R/month.R, R/set.R

Gets and sets month values for date/time vectors.

dtt_months(x, ...)

dtt_months(x) <- value

dtt_month(x, ...)

dtt_month(x) <- value

# S3 method for Date
dtt_month(x, ...)

# S3 method for POSIXct
dtt_month(x, ...)

# S3 method for Date
dtt_month(x) <- value

# S3 method for POSIXct
dtt_month(x) <- value

dtt_set_month(x, value)

Arguments

x

A date/time vector.

...

Unused.

value

A integer vector of the month value(s).

Value

An integer vector (or the modified date/time vector).

Methods (by class)

  • dtt_month(Date): Get integer vector of month values for a Date vector

  • dtt_month(POSIXct): Get integer vector of month values for a POSIXct vector

Functions

  • dtt_month(Date) <- value: Set month values for a Date vector

  • dtt_month(POSIXct) <- value: Set month values for a POSIXct vector

See also

dtt_month_decimal()

Other set date: dtt_day(), dtt_years()

Examples

x <- as.Date("1990-01-02")
dtt_month(x)
#> [1] 1
dtt_month(x) <- 11L
x
#> [1] "1990-11-02"

x <- as.POSIXct("1990-01-02 23:40:51")
dtt_month(x)
#> [1] 1
dtt_month(x) <- 11L
x
#> [1] "1990-11-02 23:40:51 UTC"