seq.POSIXt {base}R Documentation

Generate Regular Sequences of Dates

Description

The method for seq for data-time classes.

Usage

seq(from, to, by, length.out=NULL, along.with=NULL)

Arguments

from starting date. Required
to end date. Optional. If supplied must be after from.
by increment of the sequence. Optional. See Details.
length.out integer, optional. desired length of the sequence.
along.with take the length from the length of this argument.

Details

by can be specified in several ways.

Value

A vector of class "POSIXct".

See Also

DateTimeClasses

Examples

## first days of years in the (commonly used) 20th century
seq(ISOdate(1901,1,1), ISOdate(1999,1,1), "years")
## by month
seq(ISOdate(2000,1,1), by="month", length=12)
## quarters
seq(ISOdate(1990,1,1), ISOdate(2000,1,1), by="3 months")