在 R 编程中确定特定日期的月份 –months()函数
R 语言中的months()
函数用于确定作为参数传递给它的特定日期的月份。
Syntax: months(date, abbreviate)
Parameters:
date: Date to be checked
abbreviate: Boolean value to abbreviate month
示例 1:
# R program to find the month
# on a specific date
# Specifying the date
date <- as.POSIXlt("2020-06-23")
date
# Calling months() function
months(date)
输出:
[1] "2020-06-23 UTC"
[1] "June"
示例 2:
# R program to find the month
# on a specific date
# Specifying the date
date <- as.POSIXlt("1994-01-17")
date
# Calling months() function
months(date, abbreviate = TRUE)
输出:
[1] "1994-01-17 UTC"
[1] "Jan"