Last data update: 2014.03.03


Package: ArArRedux
Title: Rigorous Data Reduction and Error Propagation of Ar40 / Ar39
Version: 0.2
Authors@R: person("Pieter", "Vermeesch", , "", role = c("aut", "cre"))
Description: Processes noble gas mass spectrometer data to determine the isotopic composition of argon (comprised of Ar36, Ar37, Ar38, Ar39 and Ar40) released from neutron-irradiated potassium-bearing minerals. Then uses these compositions to calculate precise and accurate geochronological ages for multiple samples as well as the covariances between them. Error propagation is done in matrix form, which jointly treats all samples and all isotopes simultaneously at every step of the data reduction process. Includes methods for regression of the time-resolved mass spectrometer signals to t=0 ('time zero') for both single- and multi-collector instruments, blank correction, mass fractionation correction, detector intercalibration, decay corrections, interference corrections, interpolation of the irradiation parameter between neutron fluence monitors, and (weighted mean) age calculation. All operations are performed on the logs of the ratios between the different argon isotopes so as to properly treat them as 'compositional data', sensu Aitchison [1986, The Statistics of Compositional Data, Chapman and Hall].
Author: Pieter Vermeesch [aut, cre]
Maintainer: Pieter Vermeesch <>
Depends: R (>= 3.0.2)
Imports: utils, stats, methods, graphics, grDevices
License: GPL-2
LazyData: true
Packaged: 2015-08-26 15:03:28 UTC; pvermees
NeedsCompilation: no
Repository: CRAN
Date/Publication: 2015-08-26 23:00:14

19 images, 33 functions, 0 datasets
● Reverse Depends: 0

Install log

* installing to library '/home/ddbj/local/lib64/R/library'
* installing *source* package 'ArArRedux' ...
** package 'ArArRedux' successfully unpacked and MD5 sums checked
** R
** data
*** moving datasets to lazyload DB
** inst
** preparing package for lazy loading
** help
*** installing help indices
  converting help for package 'ArArRedux'
    finding HTML links ... done
    Melbourne                               html  
    PHdata                                  html  
    average                                 html  
    averagebyday                            html  
    blankcorr                               html  
    blankcorrected                          html  
    calibration                             html  
    clcorrection                            html  
    concat                                  html  
    decaycorrection                         html  
    fitlogratios                            html  
    fractionation                           html  
    get4039                                 html  
    getJfactors                             html  
    getages                                 html  
    getmasses                               html  
    interference                            html  
    loaddata                                html  
    loadirradiations                        html  
    logratios                               html  
    massfractionation                       html  
    newredux                                html  
    param                                   html  
    plot                                    html  
    plotcorr                                html  
    process                                 html  
    read                                    html  
    redux                                   html  
    results                                 html  
    subset                                  html  
    summary                                 html  
    timeresolved                            html  
    weightedmean                            html  
** building package indices
** testing if installed package can be loaded
* DONE (ArArRedux)
Making 'packages.html' ... done