Summary.Date
Summary Group Method for Date/Time Objects

Description

A group method for calculating mathematical summaries for Date/Time objects.

Usage

## min, max, range
## S3 method for class 'Date':
Summary(..., na.rm)
## S3 method for class 'POSIXct':
Summary(..., na.rm)
## S3 method for class 'POSIXlt':
Summary(..., na.rm)

## min, max, range, sum
## S3 method for class 'difftime':
Summary(..., na.rm)

Arguments

na.rm a logical flag, TRUE is to remove missing value before computation, by default is FALSE.
... additional arguments.
Value
returns the result of generic functions.
See Also
Summary, Date, POSIXt, difftime
Examples
## Date
(d <- Sys.Date() + 1:10)
range(d)

## POSIXct
(ct <- Sys.time() + 1:10)
range(ct)

## POSIXlt
(lt <- as.POSIXlt(Sys.time() + 1:10))
range(lt)

## difftime
(dt <- Sys.time() - as.POSIXct(Sys.Date()) + 1:10)
sum(dt)
Package base version 4.0.0-28
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