MatCal: Open Source Bayesian 14C Age Calibration in Matlab

Abstract

The matcal function provides radiocarbon (14C) age calibration in Matlab using the Bayesian highest posterior density (HPD). The function produces a probability distribution function (PDF) of calibrated ages, as well as 1 sigma (68.27%) and 2 sigma (95.45%) probability calibrated age credible intervals, calculated using HPD. Publication ready calibration plots are also produced, with the option to save to disk. Calibration output can be in either Cal BP or BCE/CE (BC/AD), and a reservoir age can be specified if necessary. The user can choose from a number of calibration curves, including the latest version of IntCal.

Keywords

• 14C
• radiocarbon
• calibration
• Bayesian statistics
• Matlab
• archaeology
• geology