Summary Group Method for Date/Time Objects

Summary.Date

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. If TRUE, removes missing values before computation. The default is FALSE.
...	additional arguments.

Value

returns the results of the 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 6.1.4-13
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