lubridate
要從 CRAN 安裝包:
install.packages("lubridate")
要從 Github 安裝開發版本:
library(devtools)
# dev mode allows testing of development packages in a sandbox, without interfering
# with the other packages you have installed.
dev_mode(on=T)
install_github("hadley/lubridate")
dev_mode(on=F)
要獲得有關 lubridate 包裝的插圖:
vignette("lubridate")
要獲得有關某些功能的幫助 foo
:
help(foo) # help about function foo
?foo # same thing
# Example
# help("is.period")
# ?is.period
要獲取函式 foo
的示例:
example("foo")
# Example
# example("interval")