Calendar Parameters

Calendar Parameters

Usage

calendar_label(object)

calendar_name(object)

calendar_unit(object)

calendar_epoch(object)

calendar_fixed(object)

calendar_direction(object)

calendar_year(object)

# S4 method for class 'TimeScale'
calendar_label(object)

# S4 method for class 'TimeScale'
calendar_name(object)

# S4 method for class 'TimeScale'
calendar_unit(object)

# S4 method for class 'TimeScale'
calendar_epoch(object)

# S4 method for class 'TimeScale'
calendar_fixed(object)

# S4 method for class 'TimeScale'
calendar_direction(object)

# S4 method for class 'NULL'
calendar_direction(object)

# S4 method for class 'TimeScale'
calendar_year(object)

Arguments

object

A TimeScale object.

Value

• calendar_label() returns a character string giving the abbreviated label of the time scale.

• calendar_name() returns a character string giving the name of the time scale.

• calendar_unit() returns a character string giving the unit of the calendar.

• calendar_fixed() returns a length-one numeric vector giving the reference date of the calendar (in rata die).

• calendar_epoch() returns a length-one numeric vector giving the epoch year from which years are counted (starting date of the calendar, in years).

• calendar_direction() returns a length-one integer vector specifying if years are counted backwards (\(-1\)) or forwards (\(1\)) from epoch. Only the sign of calendar_direction() is relevant.

• calendar_year() returns a length-one numeric vector giving the average length of the year in solar days.

See also

Other calendar tools: calendar(), convert(), gregorian, is(), julian()

Author

N. Frerebeau

Examples

## Define time scales
calendar("BP")
#> Before Present (BP): Gregorian years counted backwards from 1950
calendar("AD")
#> Anno Domini (AD): Gregorian years counted forwards from 0
calendar("julian")
#> Julian years counted forwards from 1

## Shortcuts
BP()
#> Before Present (BP): Gregorian years counted backwards from 1950
AD()
#> Anno Domini (AD): Gregorian years counted forwards from 0
J()
#> Julian years counted forwards from 1