IsoplotR: Statistical Toolbox for Radiometric Geochronology

An R implementation of Ken Ludwig's popular Isoplot add-in to Microsoft Excel. Currently plots U-Pb data on Wetherill and Tera-Wasserburg concordia diagrams. Calculates concordia and discordia ages. Performs linear regression of measurements with correlated errors using the 'York' approach. Generates Kernel Density Estimates (KDEs) and Cumulative Age Distributions (CADs). Produces Multidimensional Scaling (MDS) configurations and Shepard plots of multi-sample detrital datasets using the Kolmogorov-Smirnov distance as a dissimilarity measure. Calculates 40Ar/39Ar ages, isochrons, and age spectra. Computes weighted means accounting for overdispersion. Calculates U-Th-He (single grain and central) ages, logratio plots and ternary diagrams. Processes fission track data using the external detector method and LA-ICP-MS, calculates central ages and plots fission track and other data on radial (a.k.a. 'Galbraith') plots. Deconvolves finite mixtures and minimum ages from heteroscedastic data. Future versions will include functionality for the Rb-Sr, Sm-Nd, Re-Os, Lu-Hf and U-series dating methods. A graphical user interface is provided as an RStudio Shiny app at <http://isoplotr.london-geochron.com>. Offline access to this interface will be provided at a later point in time.

Author
Pieter Vermeesch [aut, cre]
Date of publication
2016-11-16 10:57:16
Maintainer
Pieter Vermeesch <p.vermeesch@ucl.ac.uk>
License
GPL-2
Version
0.8

View on CRAN

Man pages

age
Calculate isotopic ages
agespectrum
Plot a (40Ar/39Ar) release spectrum
cad
Plot continuous data as cumulative age distributions
central
Calculate U-Th-He (and fission track) central ages and...
concordia
Concordia diagram
ellipse
Get coordinates of error ellipse for plotting
examples
Example datasets for testing 'IsoplotR'
helioplot
Visualise U-Th-He data on a logratio plot or ternary diagram
iratio
Isotopic ratios
isochron
Calculate and plot isochrons
kde
Create (a) kernel density estimate(s)
lambda
Decay constants
mds
Multidimensional Scaling
peakfit
Finite mixture modelling of geochronological datasets
radialplot
Visualise heteroscedastic data on a radial plot
read.data
Read geochronology data
settings
Load settings to and from json
weightedmean
Calculate the weighted mean age
yorkfit
Linear regression of X,Y-variables with correlated errors

Files in this package

IsoplotR
IsoplotR/inst
IsoplotR/inst/DZ.csv
IsoplotR/inst/MountTom.csv
IsoplotR/inst/constants.json
IsoplotR/inst/ArAr.csv
IsoplotR/inst/spectrum.csv
IsoplotR/inst/KDE.csv
IsoplotR/inst/UPb.csv
IsoplotR/inst/FT1.csv
IsoplotR/inst/RbSr.csv
IsoplotR/inst/FT2.csv
IsoplotR/inst/average.csv
IsoplotR/inst/UThHe.csv
IsoplotR/inst/FT3.csv
IsoplotR/NAMESPACE
IsoplotR/data
IsoplotR/data/examples.rda
IsoplotR/R
IsoplotR/R/botev.R
IsoplotR/R/regression.R
IsoplotR/R/age.R
IsoplotR/R/UPb.R
IsoplotR/R/agespectrum.R
IsoplotR/R/radialplot.R
IsoplotR/R/weightedmean.R
IsoplotR/R/mds.R
IsoplotR/R/io.R
IsoplotR/R/documentation.R
IsoplotR/R/concordia.R
IsoplotR/R/kde.R
IsoplotR/R/peakfit.R
IsoplotR/R/fissiontracks.R
IsoplotR/R/toolbox.R
IsoplotR/R/ArAr.R
IsoplotR/R/discordia.R
IsoplotR/R/UThHe.R
IsoplotR/R/errorellipse.R
IsoplotR/R/cad.R
IsoplotR/R/constants.R
IsoplotR/R/json.R
IsoplotR/R/helioplot.R
IsoplotR/R/zzz.R
IsoplotR/R/isochron.R
IsoplotR/R/central.R
IsoplotR/MD5
IsoplotR/DESCRIPTION
IsoplotR/man
IsoplotR/man/iratio.Rd
IsoplotR/man/central.Rd
IsoplotR/man/agespectrum.Rd
IsoplotR/man/ellipse.Rd
IsoplotR/man/yorkfit.Rd
IsoplotR/man/peakfit.Rd
IsoplotR/man/read.data.Rd
IsoplotR/man/lambda.Rd
IsoplotR/man/radialplot.Rd
IsoplotR/man/mds.Rd
IsoplotR/man/concordia.Rd
IsoplotR/man/age.Rd
IsoplotR/man/kde.Rd
IsoplotR/man/settings.Rd
IsoplotR/man/examples.Rd
IsoplotR/man/cad.Rd
IsoplotR/man/helioplot.Rd
IsoplotR/man/weightedmean.Rd
IsoplotR/man/isochron.Rd