Recur on an interval

recur_on_interval() adjusts the interval of the base frequency of the recurrence rule. For example, a monthly() rule with an interval of 2 would become "every other month".

Usage

recur_on_interval(x, n)

Arguments

x

[rrule]

A recurrence rule.

n

[positive integer(1)]

The interval on which to recur.

Value

An updated rrule.

Examples

# The default interval is 1
on_monthly <- monthly(since = "1999-01-01")

alma_search("1999-01-01", "1999-06-01", on_monthly)
#> [1] "1999-01-01" "1999-02-01" "1999-03-01" "1999-04-01" "1999-05-01"
#> [6] "1999-06-01"

# Adjust to every other month
on_every_other_month <- on_monthly %>% recur_on_interval(2)

alma_search("1999-01-01", "1999-06-01", on_every_other_month)
#> [1] "1999-01-01" "1999-03-01" "1999-05-01"

# Note that the frequency is limited to "every other month", but you
# can still have multiple events inside a single month
on_every_other_month_on_day_25_or_26 <- on_every_other_month %>%
  recur_on_day_of_month(25:26)

alma_search("1999-01-01", "1999-06-01", on_every_other_month_on_day_25_or_26)
#> [1] "1999-01-25" "1999-01-26" "1999-03-25" "1999-03-26" "1999-05-25"
#> [6] "1999-05-26"