In stat545ubc-2021/timediff_package: Calculate the time difference between two dates

knitr::opts_chunk$set(
  collapse = TRUE
)

timediff

The goal of timediff package is to calculate the time difference between two dates.

Description of package

This ‘package timediff’ contains a function named timediff().

Use timediff(start_date, end_date) will return the time difference between the start date and end date as a number of years rounded to two decimal places.

The inputs need to be in date format. Using ymd() from lubridate package or as.Date() from base package.

This function will remove the NA values before calculation. No extra work is needed to handle NA values.

Installation

timediff is not yet on CRAN. But you can download it from github repository. The development version from GitHub with:

# Install devtools from CRAN
install.packages("devtools")

# install package from github
devtools::install_github("stat545ubc-2021/timediff_package")

Example

These are 2 basic examples which shows you how to use timediff() function.

library(timediff)
# example 1
timediff(as.Date("2021-10-01"), as.Date("2021-10-04"))

# example 2
# install.packages("datateachr")
# install.packages("lubridate")
date1<-timediff(datateachr::vancouver_trees$date_planted, lubridate::ymd("2021-10-04"))
head(date1)

This package is special because it also works on list inputs:

timediff(lubridate::ymd("20120101"),lubridate::ymd(c("20130101","20150101")))

timediff(lubridate::ymd(c("20120101", NA)), lubridate::ymd(c("20130101","20150101")))

stat545ubc-2021/timediff_package documentation built on Dec. 23, 2021, 5:26 a.m.