add.datetime: Adding Local Datetime

In rambur: Design and Analysis of Intertidal Chamber Experiments

Adding Local Datetime

Description

A helper function to convert UTC datetime to local datetime.

Usage

add.datetime(df, type = 3, timezone, reverse = FALSE)

Arguments

df	a data frame.
type	an integer from 1 to 3. Use 1 to add datetime, 3 to add datetime, date, and time, and 2 to add date and time.
timezone	a character string, local time zone.
reverse	a logical, whether to convert local datetime to UTC datetime.

Value

a data frame with additional columns.

Examples

# example a
df <- data.frame(datetime.UTC = as.POSIXct(c("2025-01-01 01:00:00",
"2025-07-01 01:00:00"), tz = "UTC"))
df
df1 <- add.datetime(df, type = 1, timezone = "")
df1
df1$datetime.UTC
df1$datetime

df3 <- add.datetime(df, type = 3, timezone = "")
df3


# example b
data <- data.frame(datetime = as.POSIXct(c("2025-02-01 01:00:00", "2025-08-01 01:00:00")))
data$datetime
data2 <- add.datetime(data, type = 2)
data2

rambur documentation built on Oct. 17, 2026, 1:08 a.m.