- most functions have been transferred into the new R package
`rice`

. The`rintcal`

package will become a data package with only very few functions remaining (related to loading/combining curves, and plotting/querying the intcal data) - in mix.ccurves, errors are now calculated correctly
- intcal.data can now also plot the C14 data in the ‘realms’ of F14C, pMC and D14C

- mix.ccurves now doesn’t fail if a provided cc.dir folder does not yet exist
- mix.ccurves now saves the calibration curves with values separated by a single space, not by a tab
- as per Kurt Hornik’s e-mail, added a sentinal “_PACKAGE” to the documentation
- as per Prof. Brian Ripley’s e-mail, removed permille sign of draw.D14C function as graphics devices such as of OSX do not always draw them
- some minor changes to how postbomb dates are treated and plotted

- further enhancements to functions ccurves, calibrate and caldist, especially for young dates close to the prebomb limits
- updated vignette

- a bug in ccurves causing problems with plotting and cc=4 has been corrected

- calibration of dates close to 0 14C BP now uses both prebomb and postbomb curves by default (if postbomb is provided)

- the files containing the NH and SH postbomb curves are now printed with the youngest cal BP years at the top
- 0 BC/AD (which does not exist) is now dealt with better
- added a function draw.contamination
- the calibrate function now deals better with BC/AD (e.g., new items can be added afterward in the expected locations)
- mix.ccurves now handles varying offsets (mean and/or uncertainty)
- intcal.data now has more colours, returns datasets (invisibly) and can plot selected datasets

- added a function draw.D14C to draw the D14C data together with the calibration curve.
- added an option draw.base to draw.dates

- the IntCal20 curves and their underpinning data are now available through a json file (code kindly contributed by Christopher Bronk Ramsey, University of Oxford)
- calibrate now plots better when working in BC/AD

- added a function point.estimates to calculate the mode, median, weighted mean and midpoint of a calibrated distribution (after a suggestion by Alexandra Rouillard)
- reading and writing of large files should now go faster if the data.table R package is installed (which doesn’t seem to work well on some Macs)
- added functions F14C.D14C, D14C.F14C, age.F14C, F14C.age and contaminate
- draw.ccurve now adds a legend if more than one calibration curve is plotted
- draw.dates should behave a bit faster and draw more consistently sized distributions
- added legacy ‘calibration’ data from Arnold & Libby 1951 (Science 113, 111-120)
- Calibrated dates of postbomb dates are now drawn better

- made draw.dates more flexible, e.g. can now rotate axes

- updated the documentation to include value entries for each function
- ensured that no data is written into userspace by default, as per CRAN policies
- enhanced functions to set par values more gracefully

- The C14.lim option to specify axis limits in the calibrate() function now works as expected
- renamed the package from IntCal to rintcal, to highlight the fact that this package is not officially affiliated with the IntCal Working Group
- added a function l.calib to calibrate multiple dates or calendar years
- enhanced the options of the t model (Christen and Perez 2016) as alternative for the normal distribution

- added an option ccdir to provide alternative locations of the calibration curves
- added a function new.ccdir(), which copies the package’s calibration curves into a specified folder
- C14.lim now works if 0 is included as minimum 14C age

- updated to the updated postbomb curves (now both yearly and monthly), published by Hua et al. 2021
- repaired problems with depths and calheights in draw.dates
- draw.ccurve now plots correct label when BCAD
- c14.lim now estimated correctly when a second curve is added

- draw.ccurve now plots the correct label when using BCAD, and plots depths at the expected heights
- draw.dates now plots multiple dates at the expected heights (with more precise dates peaking higher)
- corrected the Rmd files which had erroneous formatting and some confusing examples

- in mix.curves(), calibration curves are now written to a temporary directory by default, as per CRAN policies
- calibrate function now deals better with postbomb dates
- added clam’s function calBP.14C to find IntCal C14 ages corresponding to cal BP ages
- added function glue.ccurves for gluing prebomb and postbomb calibration curves
- added a warning/error to calibrate() for dates truncated by or outside the calibration curve
- updated the vignettes

- added new function list.curves
- Shortened the functions copyCalibrationCurve and draw.CalibrationCurves to the shorter and more consistent ccurve and draw.ccurve
- ccurve is now more flexible with the names of the calibration curves
- draw.ccurve can now plot another curve on its own righthand axis scale (handy when mixing pre- and postbomb curves)
- new functions calibrate, caldist and hpd, copied and modified from the clam R package

- added a function intcal.data to plot the data underlying the IntCal curves
- copyCalibrationCurve can now copy more of the curves
- new function draw.calibration curve to draw the calibration curves (one or two), or to add curves to an existing plot)

- fixed issues with the DESCRIPTION file

- Added Rd files
- Added some of the most relevant calibrated-related functions of the rbacon package (so that these can in time be deleted from that and other packages)

- fixed some errors in the description file

- first iteration of this R data package (originally put on github)