calBP.14C

Given a calendar age, the calibration curve (default cc=1) is interpolated and the corresponding 14C age and error are returned.

The IntCal20 radiocarbon calibration curves (Reimer et al. 2020 <doi:10.1017/RDC.2020.68>) are provided here in a single data package, together with previous IntCal curves (IntCal13, IntCal09, IntCal04, IntCal98) and postbomb curves. Also provided are functions to copy the curves into memory, and to plot the curves and their underlying data, as well as functions to calibrate radiocarbon dates.

Maarten Blaauw

IntCal

Radiocarbon Calibration Curves

calBP.14C function

<dl><dt>yr</dt>
<dd>The cal BP year.</dd>
<dt>cc</dt>
<dd>calibration curve for C14 (see <code>caldist()</code>).</dd>
<dt>postbomb</dt>
<dd>Whether or not to use a postbomb curve (see <code>caldist()</code>).</dd>
<dt>rule</dt>
<dd>How should R's approx function deal with extrapolation. If <code>rule=1</code>, the default, then NAs are returned for such points and if it is 2, the value at the closest data extreme is used.</dd>
<dt>ccdir</dt>
<dd>Directory of the calibration curves. Defaults to where the package's files are stored (system.file), but can be set to, e.g., <code>ccdir="curves"</code>.</dd></dl>

Arguments

Author

Find the 14C age and error belonging to a cal BP age. — calBP.14C

<dl>

<dt>yr</dt>
<dd>The cal BP year.</dd>


<dt>cc</dt>
<dd>calibration curve for C14 (see <code>caldist()</code>).</dd>


<dt>postbomb</dt>
<dd>Whether or not to use a postbomb curve (see <code>caldist()</code>).</dd>


<dt>rule</dt>
<dd>How should R's approx function deal with extrapolation. If <code>rule=1</code>, the default, then NAs are returned for such points and if it is 2, the value at the closest data extreme is used.</dd>


<dt>ccdir</dt>
<dd>Directory of the calibration curves. Defaults to where the package's files are stored (system.file), but can be set to, e.g., <code>ccdir="curves"</code>.</dd>

</dl>

calBP.14C: Find the 14C age and error belonging to a cal BP age.

Description

Usage

Arguments

Author

Details

Examples