Changelog

Source: NEWS.md

c14 0.2.0

c14 v0.1.0.9000 (development version)

• as_cal() renamed to as_cal_dist() (#56)
• New introductory vignette for package (vignette("c14"))
• New individual functions for point summaries of calibrated radiocarbon dates, replacing cal_point() (documented under ?cal_point): cal_mode(), cal_median(), cal_mean(), cal_local_mode(), and cal_central().
• Package no longer depends on checkmate, curl (depends), mockery, readr, readxl, usethis (suggests), or dplyr (suggests, but still required to build website)
• New cal_probability() summary of the probability that a calibrated date lies in a specified range (#38)
• New default plot() method for cal vectors (#32)
• New cal_hdi() and cal_hdr() summaries of the highest density interval and region(s) of a calibrated radiocarbon dates
  • Default printing of cal vectors is now the highest density interval
  • Replaces cal_age_range(), cal_age_min(), and cal_age_max()
• c14_calibrate and all summary and aggregation functions now use an efficient internal calibration algorithm, instead of an external dependency
  • c14_calibrate() no longer has engine or min_pdens arguments (#24, #26)
  • c14_calibrate() now accepts a curve argument (#9)

c14 v0.1.0

Development version as of December 2024. Major changes since fork from stratigraphr:

• Revised the definition of the cal class, representing calibrated radiocarbon dates:
  • cal is now a vctrs::list_of subclass; a list of two-column data frames representing the probability distribution
  • The age column of a cal element is now an era::yr vector.
  • “Metadata” has been removed from the class definition
• Added summary functions for calibrated dates (cal class):
  • cal_point() for point estimates
  • cal_age_range(), cal_age_min(), and cal_age_max() for simple ranges
• Added aggregation functions for for calibrated dates (cal class):
  • cal_sum() for summed probability
  • cal_density() for composite kernel density estimation
• Added classes, functions and datasets for calibration curves:
  • c14_curve is a vctrs record class representing a calibration curve, with subclasses c14_curve_14c and c14_curve_f14c for CRA-based and F14C-based records respectively.
  • c14_curve() constructs a c14_curve_14c object
  • c14_fcurve() constructs a c14_curve_f14c object
  • read_14c() reads .14c and .f14c files
  • ?c14_curves: exported datasets for the IntCal20, SHCal20, Marine20, IntCal13, SHCal13, Marine13, IntCal09, Marine09, IntCal04, SHCal04, Marine04, IntCal98, and Marine98 curves.
• Added functions and datasets for working with radiocarbon measurements:
  • c14_age() for calculating a radiocarbon age from fraction modern.
  • c14_f14c() for reverse-calculating fraction modern from a radiocarbon age.
  • Decay constants c14_decay_libby and c14_decay_cambridge.
• Added example datasets ppnd and shub1_c14

c14 v0.0.0

The initial version of this package was forked from stratigraphr v0.3.0