int_to_year

Convert an integer to a date.

Usage

int_to_year(x, month = "06", day = "15")

Arguments

x

An integer or vector integers.

month

The month to be added to the year. Months 1 to 9 should be given as character strings, i.e. "01", "02", etc, and not 1 or 2o, etc.

day

The day to be added to the year. Days should be given as character strings, i.e., "01" or "02", etc, and not 1 or 2, etc.

Value

A vector of dates where the input integer forms the year component. The day and month components added will by default be the 15th of June, so that tick marks will appear in the middle of the series on plots. For input, only years 0:9999 are accepted.

Author

Kieran Healy

Examples

int_to_year(1960)
#> [1] "1960-06-15"
class(int_to_year(1960))
#> [1] "Date"
int_to_year(1960:1965)
#> [1] "1960-06-15" "1961-06-15" "1962-06-15" "1963-06-15" "1964-06-15"
#> [6] "1965-06-15"
int_to_year(1990, month = "01", day = "30")
#> [1] "1990-01-30"