chron (version 2.3-56)

seq.dates: Generate Chron or Dates Sequences

Description

Generate a regular sequence of dates.

Usage

# S3 method for dates
seq(from, to, by = "days", length., …)

Arguments

from

starting date; it can be a chron or dates object, a character string, e.g., "05/23/91", or a Julian date.

to

ending date, like from.

by

either a numeric value or one of the valid strings "days", "weeks", "months", or "years".

length.

optional number of elements in the sequence.

…

further arguments to be passed to or from methods.

Value

a sequence with values (from, from + by, from + 2*by, …, to) of class class(from) and origin origin(from). Note that from must be less than or equal to the argument to.

See Also

chron, dates, cut.dates

Examples

# NOT RUN {
seq.dates("01/01/92", "12/31/92", by = "months")
# [1] 01/01/92 02/01/92 03/01/92 04/01/92 05/01/92 06/01/92
# [7] 07/01/92 08/01/92 09/01/92 10/01/92 11/01/92 12/01/92

end.of.the.month <- seq.dates("02/29/92", by = "month", length = 15)
end.of.the.month
#  [1] 02/29/92 03/31/92 04/30/92 05/31/92 06/30/92 07/31/92
#  [7] 08/31/92 09/30/92 10/31/92 11/30/92 12/31/92 01/31/93
# [13] 02/28/93 03/31/93 04/30/93
# }