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rintcal 1.1.1

• added an option as.F to ccurve, to read in curves as F14C instead of as C14. Can only be used using the ‘official’ intcal20 .14c files
• now reads the ‘official’ intcal20 .14c files instead of the 3Col_ derivatives
• when using ccurve, curves will be returned with cal BP years increasing (the default 14c files return then decreasing)

rintcal 1.1.0

• updated the glue.ccurves and mix.ccurves functions so that tailor-made curves can be provided
• added NOTCal04 (van der Plicht et al. 2004) as legacy curve. This curve was released 20 years ago as a warning NOT to calibrate older radiocarbon ages, because at the time the datasets were too much in disagreement - however, some did go ahead and used NOTCal04 as a calibration curve…
• added the original plain-text files intcal20.14c, marine20.14c and shcal20.14c. These comma-separated-value files include D14C values (the IntCal20 curves were modelled in D14C space).

rintcal 1.0.0

• 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

rintcal 0.6.4

• 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

rintcal 0.6.3

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

rintcal 0.6.2

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

rintcal 0.6.1

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

rintcal 0.6.0

• 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

rintcal 0.5.3

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

rintcal 0.5.2

• 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

rintcal 0.5.0

• 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

rintcal 0.4.2

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

rintcal 0.4.1

• 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

rintcal 0.4.0

• 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

IntCal 0.3.1

• 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

IntCal 0.3.0

• 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

IntCal 0.2.3

• 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

IntCal 0.2.2

• 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

IntCal 0.2.1

• 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

IntCal 0.2.0

• 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)

IntCal 0.1.3

• fixed issues with the DESCRIPTION file

IntCal 0.1.2

• 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)

IntCal 0.1.1

• fixed some errors in the description file

IntCal 0.1.0

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

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.