A virtual S4 class to represent a calendar.
labelA character string specifying the abbreviated label of
the time scale.
nameA character string specifying the name of the time scale.
epochA numeric value specifying the epoch year from which
years are counted (starting date of the calendar, in years). Allows to
define multiple era of a calendar.
fixedA numeric value specifying the reference date of the calendar
(in rata die).
directionAn integer specifying if years are counted backwards
(-1) or forwards (1) from epoch.
yearA numeric value giving the average length of the year in
solar days.
N. Frerebeau
Other classes:
GregorianCalendar-class,
JulianCalendar-class,
RataDie-class,
TimeIntervals-class,
TimeSeries-class
Other calendar classes:
GregorianCalendar-class,
JulianCalendar-class