                 Changes in version 1.4.2 (2026-09-08)                  

  - added more detail regarding and references to available calibration
    curves in the documentation for ccurve.
  - the code within the ccurve function is now shorter and less
    repetitive.
  - new internal function (taken from the rice package) to deal more
    robustly with BCAD (and its zero option is added).
  - any functions that provide options for rounding, now default to as
    many decimals as possible (decimals=Inf).
  - intcal.plot.record now checks that the requested record number is an
    integer between 1 and 140 (which is the amount of IntCal20
    datasets).

                 Changes in version 1.4.1 (2026-06-23)                  

  - intcal.data now plots D14C correctly when BCAD=TRUE.
  - intcal.data no longer truncates the second calibration curve if
    activated (e.g., cc2=2).

                 Changes in version 1.4.0 (2026-03-13)                  

  - intcal.data now plots all data within the supplied timeframe.
  - intcal.plot.record gains an option to plot the values on the D14C
    timescale.
  - cleaned up the bibliography/references.

                 Changes in version 1.3.1 (2025-12-07)                  

  - added historical C-14 comparison/calibration curves: Arnold &
    Libby 1951, Stuiver & Suess 1966, Pearson & Stuiver 1986. They can
    be called as in libby <- ccurve("arnold_libby_1951"), stuiver_66 <-
    ccurve("stuiver_suess_1966") or pearson_1986 <-
    ccurve("pearson_stuiver_1986").
  - renamed as.D options to the more correct as.Delta.

                 Changes in version 1.3.0 (2025-07-09)                  

  - glue.ccurves now has an option as.D.
  - new function intcal.extract.record which extracts a single intcal
    record.
  - new function intcal.plot.record to plot the calendar and C-14 ages
    of a single intcal record.

                 Changes in version 1.2.1 (2025-06-10)                  

  - undid the un-nesting of if-loops in ccurve from version 1.2.0, owing
    to it causing a bug in the rice package.

                        Changes in version 1.2.0                        

  - the files of all C14 curves are now separated by spaces (some
    postbomb curves had tabs instead)
  - new option to use as.pMC in the functions ccurve, mix.ccurves and
    glue.ccurves
  - added Prof. Christopher Bronk Ramsey as contributor (he kindly wrote
    much of the code to extract information from the intcal data)
  - added postbomb data 2016-2023 from Jungfraujoch (Emmenegger et
    al. 2024, doi:10.1017/RDC.2016.62)
  - reduced the amount of nested 'if's in the function ccurve.
  - intcal.data now also plots data at the extremes of the age axis

                 Changes in version 1.1.3 (2025-04-04)                  

  - updated how as.F is used in ccurve and intcal.data, and added as.F
    to mix.ccurves and glue.ccurves
  - rounding is now done to 8 decimals by default (was 5). This will
    make transfers between C14 and F14C values slightly more precise

                 Changes in version 1.1.2 (2025-01-12)                  

  - intcal.data now plots the relevant data also when BCAD=TRUE

                 Changes in version 1.1.1 (2024-12-19)                  

  - 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)

                 Changes in version 1.1.0 (2024-11-28)                  

  - 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).

                 Changes in version 1.0.0 (2024-09-23)                  

  - 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

                 Changes in version 0.6.4 (2023-10-06)                  

  - 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

                 Changes in version 0.6.3 (2023-08-08)                  

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

                 Changes in version 0.6.2 (2023-07-16)                  

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

                 Changes in version 0.6.1 (2023-06-30)                  

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

                 Changes in version 0.6.0 (2023-05-01)                  

  - 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

                 Changes in version 0.5.3 (2023-01-31)                  

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

                 Changes in version 0.5.2 (2022-12-01)                  

  - 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

                 Changes in version 0.5.0 (2022-10-04)                  

  - 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

                        Changes in version 0.4.2                        

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

                 Changes in version 0.4.1 (2022-08-15)                  

  - 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

                        Changes in version 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

                        Changes in version 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

                        Changes in version 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

                        Changes in version 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

                        Changes in version 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

                        Changes in version 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

                        Changes in version 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)

                        Changes in version 0.1.3                        

  - fixed issues with the DESCRIPTION file

                        Changes in version 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)

                        Changes in version 0.1.1                        

  - fixed some errors in the description file

                        Changes in version 0.1.0                        

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