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R seq() function – Generate sequence
R seq.Date() function - Generate date sequence
R seq.Date() function is used to generate equally spaced date sequences.
In time series analysis and periodic report generation, creating date sequences is a very common requirement.
The syntax of seq.Date() function is as follows:
seq(from, to, by = "days")Parameter Description:
- from Start date.
- to End date.
- by Interval: "days", "weeks", "months", "years", or "3 days", etc.
Examples
# Date Sequence of This Weekstart<-as.Date("2026-05-11")week_dates <-seq(start, by="days", length.out=7)print("Dates of This Week:")print(week_dates)
# First Day of Each Monthmonth_starts <-seq(as.Date("2026-01-01"),as.Date("2026-12-01"),by="months")print("First Day of Each Month:")print(month_starts)
Executing the above code produces the following output:
"Dates of This Week:" "2026-05-11" "2026-05-12" "2026-05-13" "2026-05-14" "2026-05-15" "2026-05-16" "2026-05-17" "First Day of Each Month:" "2026-01-01" "2026-02-01" "2026-03-01" "2026-04-01" "2026-05-01" "2026-06-01" "2026-07-01" "2026-08-01" "2026-09-01" "2026-10-01" "2026-11-01" "2026-12-01"