calBPtoBCAD: calculate cal BC/AD ages from cal BP ages

In rice: Radiocarbon Equations

calculate cal BC/AD ages from cal BP ages

Description

calculate cal BC/AD ages from cal BP ages

Usage

calBPtoBCAD(x, zero = FALSE)

Arguments

x	The calBP age(s) to be translated into cal BC/AD ages.
zero	Whether or not zero BC/AD should be included. Defaults to zero=FALSE.

Details

Turn cal BP ages into cal BC/AD (equivalent to cal BCE/CE). Negative ages indicate cal BC, positive ages cal AD. Since the Gregorian and Julian calendars do not include 0 BCAD (i.e., 31 December of 1 BC is followed by 1 January of AD 1), zero can be omitted. The years then go from -1 (i.e., 1 BC) to 1 AD. Other calendars, such as the astronomical one, do include zero.

Value

The cal BC/AD age(s). BC ages are negative, AD ages are positive.

Examples

 calBPtoBCAD(2024)
 calBPtoBCAD(1945:1955, zero=FALSE)
 calBPtoBCAD(1945:1955, zero=TRUE)

rice documentation built on Jan. 8, 2026, 9:07 a.m.