round_time function

A generic function for rounding date and time values

round_time(x, n, tz)

Arguments

• x: A vector of class POSIX or Date.
• n: Unit to round to. Defaults to mins. Numeric values treated as seconds. Otherwise this should be one of "mins", "hours", "days", "weeks", "months", "years" (plural optional).
• tz: Time zone to be used, defaults to "UTC" (Twitter default)

Returns

If POSIXct then POSIX. If date then Date.

Examples

## class posixct
round_time(Sys.time(), "12 hours")

## class date
unique(round_time(seq(Sys.Date(), Sys.Date() + 100, "1 day"), "weeks"))