hydroTSM (version 0.3-5)

yip: Years in Period

Description

Given any starting and ending dates, it generates: 1) a vector of class Date with all the years between the two dates, OR 2) the amount of years between the two dates

Usage

yip(from, to, date.fmt = "%Y-%m-%d", out.type = "seq")

Arguments

from

Character indicating the starting date for creating the sequence. It has to be in the format indicated by date.fmt.

to

Character indicating the ending date for creating the sequence. It has to be in the format indicated by date.fmt.

date.fmt

character indicating the format in which the dates are stored in dates, e.g. %Y-%m-%d. See format in as.Date.

out.type

Character indicating the type of result that is given by this function. Valid values are: -) seq => a vectorial sequence with all the years within the given dates. -) nmbr => the number of years within the given dates.

Value

• Depending on the value of out.type, it returns: 1) seq : a vector of class Date with all the years between the two dates, OR 2) nmbr: a single numeric value with the amount of years between the two dates.

See Also

dip, diy, mip

Examples

# Sequence of monthly dates between "1961-01-01" and "1961-12-31"
yip("1961-01-01", "1961-12-31")

## Computing the number of years between 1961 and 1975, 
## by using "\%d-\%m-\%Y" as date format   ##
yip("01-01-1961", "01-01-1975", date.fmt= "%d-%m-%Y", out.type = "nmbr")