removeEarlyDates removes dates before a specified year

Dates before a specified year are set to NA. This is often used for dates formed from malformed character representations such as a date in

removeEarlyDates(dates, firstYear)

Arguments

dates	vector of dates
firstYear	integer value of first (earliest) year in the allowed date range.

Value

A vector of dates after the year indicated by the numeric value of firstYear.

Details

NA values are ignored and not changed.

Examples

# \donttest{
dates <- structure(c(12361, 14400, 15413, NA, 11189, NA, 13224, 10971,
                     -432000, 13262), class = "Date")
cleanedDates <- removeEarlyDates(dates, firstYear = 1000)
dates
#>  [1] "2003-11-05" "2009-06-05" "2012-03-14" NA           "2000-08-20"
#>  [6] NA           "2006-03-17" "2000-01-15" "0787-03-24" "2006-04-24"
cleanedDates
#>  [1] "2003-11-05" "2009-06-05" "2012-03-14" NA           "2000-08-20"
#>  [6] NA           "2006-03-17" "2000-01-15" NA           "2006-04-24"
# }