rice (version 1.1.1)

BCADtocalBP: calculate cal BP ages from BC/AD ages

Description

calculate cal BP ages from BC/AD ages

Usage

BCADtocalBP(x, zero = TRUE)

Value

The cal BP age(s).

Arguments

x

The BCAD age(s) to be translated into cal BP age(s). BC ages are negative, AD ages are positive.

zero

Whether or not zero BC/AD should be included. Defaults to 0.

Details

Turn BC/AD (or BCE/CE) ages into cal BP ages. Negative ages indicate BC, positive ages AD. Since the Gregorian and Julian calendars do not include 0 BC/AD (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. The often-used BCE/CE ages are equivalent to BC/AD.

Examples

 BCADtocalBP(2024)
 BCADtocalBP(-1, zero=TRUE)
 BCADtocalBP(-1, zero=FALSE)