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Given a calendar age, the calibration curve (default cc=1) is interpolated and the corresponding 14C age and error are returned.
calBPtoC14(
x,
cc = 1,
postbomb = FALSE,
rule = 1,
cc.dir = NULL,
thiscurve = NULL
)The calibration-curve 14C year belonging to the entered cal BP age
The cal BP year.
calibration curve for C14 (see caldist()).
Whether or not to use a postbomb curve (see caldist()).
How should R's approx function deal with extrapolation. If rule=1, the default, then NAs are returned for such points and if it is 2, the value at the closest data extreme is used.
Directory of the calibration curves. Defaults to where the package's files are stored (system.file), but can be set to, e.g., cc.dir="curves".
As an alternative to providing cc and/or postbomb, the data of a specific curve can be provided (3 columns: cal BP, C14 age, error).
Maarten Blaauw
Interpolation is used, and values outside the calibration curve are given as NA. For negative cal BP ages, a postbomb curve will have to be provided.