{ "_id": "6ad8673f0d12c08e591b9acc", "Package": "carbondate", "Title": "Calibration and Summarisation of Radiocarbon Dates", "Version": "1.1.0.9000", "Authors@R": "c(\nperson(\"Timothy J\", \"Heaton\", , \"T.Heaton@leeds.ac.uk\", role = c(\"aut\", \"cre\", \"cph\"),\ncomment = c(ORCID = \"0000-0002-9994-142X\")),\nperson(\"Sara\", \"Al-assam\", , \"sarassam@gmail.com\", role = c(\"aut\", \"cph\"),\ncomment = c(ORCID = \"0000-0001-7280-6802\")))", "Description": "Performs Bayesian non-parametric calibration of multiple\nrelated radiocarbon determinations, and summarises the calendar\nage information to plot their joint calendar age density (see\nHeaton (2022) ). Also models the\noccurrence of radiocarbon samples as a variable-rate\n(inhomogeneous) Poisson process, plotting the posterior\nestimate for the occurrence rate of the samples over calendar\ntime, and providing information about potential change points\n(see Heaton, Al-assam & Bard (2025)\n).", "License": "GPL (>= 3)", "Encoding": "UTF-8", "Roxygen": "list(markdown = TRUE)", "Config/testthat/edition": "3", "LazyData": "true", "URL": "https://github.com/TJHeaton/carbondate,\nhttps://tjheaton.github.io/carbondate/", "BugReports": "https://github.com/TJHeaton/carbondate/issues", "VignetteBuilder": "knitr", "Config/roxygen2/version": "8.0.0", "Repository": "https://tjheaton.r-universe.dev", "Date/Publication": "2026-07-23 00:04:52 UTC", "RemoteUrl": "https://github.com/tjheaton/carbondate", "RemoteRef": "HEAD", "RemoteSha": "03bcd2b5ad4282b0c92e2cae9f8b76ba3e5ff705", "NeedsCompilation": "yes", "Packaged": { "Date": "2026-10-21 06:55:07 UTC", "User": "root" }, "Author": "Timothy J Heaton [aut, cre, cph] (ORCID:\n),\nSara Al-assam [aut, cph] (ORCID:\n)", "Maintainer": "Timothy J Heaton ", "_user": "tjheaton", "_type": "src", "_file": "carbondate_1.1.0.9000.tar.gz", "_fileid": "https://r2.ropensci.org/b9c52a859355277aeafb0d07a8dda9a0c02b833e35c4cb00ef24134a481938f6", "_filesize": 7228042, "_sha256": "b9c52a859355277aeafb0d07a8dda9a0c02b833e35c4cb00ef24134a481938f6", "_expires": "2027-01-29T07:18:17.000Z", "_created": "2026-10-21T06:55:07.000Z", "_published": "2026-10-21T07:18:23.171Z", "_buildurl": "https://github.com/r-universe/tjheaton/actions/runs/39557724994", "_status": "success", "_host": "GitHub-Actions", "_jobs": [ { "job": 119083864037, "time": 160, "config": "linux-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "12327370174" }, { "job": 119083863986, "time": 146, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "12326517592" }, { "job": 119083863885, "time": 126, "config": "linux-release-arm64", "r": "4.6.1", "check": "OK", 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"shcal04", "title": "SHCal04 calibration curve", "object": "shcal04", "class": [ "data.frame" ], "fields": [ "calendar_age_BP", "c14_age", "c14_sig", "f14c", "f14c_sig" ], "rows": 2202, "table": true, "tojson": true }, { "name": "shcal13", "title": "SHCal13 calibration curve", "object": "shcal13", "class": [ "data.frame" ], "fields": [ "calendar_age_BP", "c14_age", "c14_sig", "f14c", "f14c_sig" ], "rows": 5141, "table": true, "tojson": true }, { "name": "shcal20", "title": "SHCal20 calibration curve", "object": "shcal20", "class": [ "data.frame" ], "fields": [ "calendar_age_BP", "c14_age", "c14_sig", "f14c", "f14c_sig" ], "rows": 9501, "table": true, "tojson": true }, { "name": "two_normals", "title": "Example artificial data - Mixture of Normal Phases", "object": "two_normals", "class": [ "data.frame" ], "fields": [ "c14_age", "c14_sig", "f14c", "f14c_sig" ], "rows": 50, "table": true, "tojson": true }, { "name": "two_normals_marine", "title": "Example artificial data - Mixture of Normal Phases Using Marine20 calibration curve", "object": "two_normals_marine", "class": [ "data.frame" ], "fields": [ "c14_age", "c14_sig", "sample_source", "delta_r", "delta_r_sig", "f14c", "f14c_sig" ], "rows": 50, "table": true, "tojson": true } ], "_help": [ { "page": "AddLinePlot", "title": "Add Straight Lines to Various Summary Plots", "topics": [ "AddLinePlot" ] }, { "page": "AddShadingPlot", "title": "Add Shading to Various Summary Plots", "topics": [ "AddShadingPlot" ] }, { "page": "AddTextPlot", "title": "Add Text Annotation to Various Summary Plots", "topics": [ "AddTextPlot" ] }, { "page": "alces", "title": "Example real-life data - Alces in Yukon and Alaska", "topics": [ "alces" ] }, { "page": "armit", "title": "Example real-life data - Population Decline in Iron Age Ireland", "topics": [ "armit" ] }, { "page": "bison", "title": "Example real-life data - Bison in Yukon and Alaska", "topics": [ "bison" ] }, { "page": "buchanan", "title": "Example real-life data - Palaeo-Indian demography", "topics": [ "buchanan" ] }, { "page": "CalibrateSingleDetermination", "title": "Calibrate a Single Radiocarbon Determination", "topics": [ "CalibrateSingleDetermination" ] }, { "page": "cervus", "title": "Example real-life data - Cervus in Yukon and Alaska", "topics": [ "cervus" ] }, { "page": "equus", "title": "Example real-life data - Equus in Yukon and Alaska", "topics": [ "equus" ] }, { "page": "FindPosteriorMeanRate", "title": "Find Posterior Mean Rate of Sample Occurrence for Poisson Process Model", "topics": [ "FindPosteriorMeanRate" ] }, { "page": "FindPredictiveCalendarAgeDensity", "title": "Find Predictive Estimate of Shared Calendar Age Density from Bayesian Non-Parametric DPMM Output", "topics": [ "FindPredictiveCalendarAgeDensity" ] }, { "page": "FindSummedProbabilityDistribution", "title": "Find the summed probability distribution (SPD) for a set of radiocarbon observations", "topics": [ "FindSummedProbabilityDistribution" ] }, { "page": "GenerateOxcalCode", "title": "Outputs code suitable for running in OxCal from a series of radiocarbon determinations", "topics": [ "GenerateOxcalCode" ] }, { "page": "human", "title": "Example real-life data - Humans in Yukon and Alaska", "topics": [ "human" ] }, { "page": "intcal04", "title": "IntCal04 calibration curve", "topics": [ "intcal04" ] }, { "page": "intcal09", "title": "IntCal09 calibration curve", "topics": [ "intcal09" ] }, { "page": "intcal13", "title": "IntCal13 calibration curve", "topics": [ "intcal13" ] }, { "page": "intcal20", "title": "IntCal20 calibration curve", "topics": [ "intcal20" ] }, { "page": "intcal98", "title": "IntCal98 calibration curve", "topics": [ "intcal98" ] }, { "page": "InterpolateCalibrationCurve", "title": "Interpolate a calibration curve at a set of calendar ages", "topics": [ "InterpolateCalibrationCurve" ] }, { "page": "kerr", "title": "Example real-life data - Irish Rath", "topics": [ "kerr" ] }, { "page": "mammuthus", "title": "Example real-life data - Mammuthus in Yukon and Alaska", "topics": [ "mammuthus" ] }, { "page": "marine04", "title": "Marine04 calibration curve", "topics": [ "marine04" ] }, { "page": "marine09", "title": "Marine09 calibration curve", "topics": [ "marine09" ] }, { "page": "marine13", "title": "Marine13 calibration curve", "topics": [ "marine13" ] }, { "page": "marine20", "title": "Marine20 calibration curve", "topics": [ "marine20" ] }, { "page": "PlotCalendarAgeDensityIndividualSample", "title": "Plot Posterior Calendar Age Estimate for an Individual Determination after Joint Calibration", "topics": [ "PlotCalendarAgeDensityIndividualSample" ] }, { "page": "PlotConvergenceData", "title": "Plot KL Divergence of Predictive Density to Assess Convergence of Bayesian Non-Parametric DPMM Sampler", "topics": [ "PlotConvergenceData" ] }, { "page": "PlotGelmanRubinDiagnosticMultiChain", "title": "Plot Histogram of the Gelman-Rubin Convergence Diagnostic for Multiple Independent MCMC Chains", "topics": [ "PlotGelmanRubinDiagnosticMultiChain" ] }, { "page": "PlotGelmanRubinDiagnosticSingleChain", "title": "Plot Histogram of the Gelman-Rubin Convergence Diagnostic for a Single MCMC Chain", "topics": [ "PlotGelmanRubinDiagnosticSingleChain" ] }, { "page": "PlotNumberOfClusters", "title": "Plot Number of Calendar Age Clusters Estimated in Bayesian Non-Parametric DPMM Output", "topics": [ "PlotNumberOfClusters" ] }, { "page": "PlotNumberOfInternalChanges", "title": "Plot Number of Changepoints in Rate of Sample Occurrence for Poisson Process Model", "topics": [ "PlotNumberOfInternalChanges" ] }, { "page": "PlotPosteriorChangePoints", "title": "Plot Calendar Ages of Changes in Rate of Sample Occurrence for Poisson Process Model", "topics": [ "PlotPosteriorChangePoints" ] }, { "page": "PlotPosteriorHeights", "title": "Plot Heights of Segments in Rate of Sample Occurrence for Poisson Process Model", "topics": [ "PlotPosteriorHeights" ] }, { "page": "PlotPosteriorMeanRate", "title": "Plot Posterior Mean Rate of Sample Occurrence for Poisson Process Model", "topics": [ "PlotPosteriorMeanRate" ] }, { "page": "PlotPredictiveCalendarAgeDensity", "title": "Plot Predictive Estimate of Shared Calendar Age Density from Bayesian Non-Parametric DPMM Output", "topics": [ "PlotPredictiveCalendarAgeDensity" ] }, { "page": "PlotRateIndividualRealisation", "title": "Plot Individual Realisations of Posterior Rate of Sample Occurrence for Poisson Process Model", "topics": [ "PlotRateIndividualRealisation" ] }, { "page": "PolyaUrnBivarDirichlet", "title": "Calibrate and Summarise Multiple Radiocarbon Samples via a Bayesian Non-Parametric DPMM (with Polya Urn Updating)", "topics": [ "PolyaUrnBivarDirichlet" ] }, { "page": "pp_uniform_phase", "title": "Example artificial data - Uniform Phase", "topics": [ "pp_uniform_phase" ] }, { "page": "pp_uniform_phase_marine", "title": "Example artificial marine data - Uniform Phase", "topics": [ "pp_uniform_phase_marine" ] }, { "page": "pp_uniform_phase_mixed", "title": "Example artificial data requiring multiple calibration curves - Uniform Phase", "topics": [ "pp_uniform_phase_mixed" ] }, { "page": "PPcalibrate", "title": "Model Occurrence of Multiple Radiocarbon Samples as a Variable-Rate Poisson Process", "topics": [ "PPcalibrate" ] }, { "page": "PPcalibrateMixedCurves", "title": "Model Occurrence of Multiple Radiocarbon Samples as a Variable-Rate Poisson Process when the Samples Come from a Variety of Environments and Multiple Calibration Curves are Needed", "topics": [ "PPcalibrateMixedCurves" ] }, { "page": "shcal04", "title": "SHCal04 calibration curve", "topics": [ "shcal04" ] }, { "page": "shcal13", "title": "SHCal13 calibration curve", "topics": [ "shcal13" ] }, { "page": "shcal20", "title": "SHCal20 calibration curve", "topics": [ "shcal20" ] }, { "page": "two_normals", "title": "Example artificial data - Mixture of Normal Phases", "topics": [ "two_normals" ] }, { "page": "two_normals_marine", "title": 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