在 R 编程中获取给定日期和时间对象的字符串表示形式 - strftime()函数

R 语言中的strftime()函数用于将给定的日期和时间对象转换为其字符串表示形式。

Syntax: strftime(time)
Parameters:
time: specified time object

示例 1：

Python3

# R program to illustrate
# strftime function
 
# Specifying a date and time
x <- "2020-06-01 16:15:10 EST"
 
# Calling strftime() function
strftime(x)

Python3

# R program to illustrate
# strftime function
 
# Specifying a date and time using
# as.Date( ) function which converts
# the character data to dates.
x <- as.Date("2020-06-17 12:10:20 EST")
 
# Calling the strftime() function using the % F format
# which is equivalent to % Y-% m-% d (the ISO 8601 date format)
y <- strftime(x, '% F')
 
# Getting string representation of
# the given date and time object
y

输出：

[1] "2020-06-01 16:15:10"

示例 2：

Python3

# R program to illustrate
# strftime function
 
# Specifying a date and time using
# as.Date( ) function which converts
# the character data to dates.
x <- as.Date("2020-06-17 12:10:20 EST")
 
# Calling the strftime() function using the % F format
# which is equivalent to % Y-% m-% d (the ISO 8601 date format)
y <- strftime(x, '% F')
 
# Getting string representation of
# the given date and time object
y

输出：

[1] "2020-06-17"