IsoplotR

Statistical Toolbox for Radiometric Geochronology

An R implementation of Ken Ludwig's popular Isoplot add-in to Microsoft Excel. 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 'York', 'Titterington' and 'Ludwig' approaches. 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). Constructs total Pb-U, Pb-Pb, Re-Os, Sm-Nd, Lu-Hf, Rb-Sr and 230Th-U isochrons as well as 230Th-U evolution plots.

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Description file content

Package
IsoplotR
Title
Statistical Toolbox for Radiometric Geochronology
Version
0.16
Description
An R implementation of Ken Ludwig's popular Isoplot add-in to Microsoft Excel. 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 'York', 'Titterington' and 'Ludwig' approaches. 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). Constructs total Pb-U, Pb-Pb, Re-Os, Sm-Nd, Lu-Hf, Rb-Sr and 230Th-U isochrons as well as 230Th-U evolution plots.
Author
Pieter Vermeesch [aut, cre]
Maintainer
Pieter Vermeesch
Depends
R (>= 3.0.0)
Imports
MASS, grDevices, graphics, stats, utils
License
GPL-2
URL
LazyData
true
RoxygenNote
6.0.1
NeedsCompilation
no
Packaged
2017-08-16 16:58:42 UTC; pvermees
Repository
CRAN
Date/Publication
2017-08-16 17:15:22 UTC

install.packages('IsoplotR')

0.16

7 days ago

http://isoplotr.london-geochron.com

Pieter Vermeesch

GPL-2

Depends on

R (>= 3.0.0)

Imports

MASS, grDevices, graphics, stats, utils

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