Perform common calculations based on published stable isotope theory, such as calculating carbon isotope discrimination and intrinsic water use efficiency from wood or leaf carbon isotope composition. See Mathias and Hudiburg (2022) in Global Change Biology <doi:10.1111/gcb.16407>.

This resource provides tools to create, compare, and post-process 
    spatial isotope assignment models of animal origin. It generates 
    probability-of-origin maps for individuals based on user-provided tissue and 
    environment isotope values (e.g., as generated by IsoMAP, Bowen et al. [2013] 
    <doi:10.1111/2041-210X.12147>) using the framework established in Bowen et al.
    (2010) <doi:10.1146/annurev-earth-040809-152429>). The package 'isocat' can then 
    quantitatively compare and cluster these maps to group individuals by 
    similar origin. It also includes techniques for applying four approaches 
    (cumulative sum, odds ratio, quantile only, and quantile simulation) with 
    which users can summarize geographic origins and probable distance traveled 
    by individuals. Campbell et al. [2020] establishes several of the functions
    included in this package <doi:10.1515/ami-2020-0004>.

Contains functions to check the isomorphism of multi-stage factorial designs with randomisation restrictions based on balanced spreads and balanced covering stars of PG(n-1,2) as described in Spencer, Ranjan and Mendivil (2019) <doi:10.1007/s42519-019-0064-5>.

A bunch of functions to deal with circular data under order restrictions.

ISO language, territory, currency, script and character codes.
  Provides ISO 639 language codes, ISO 3166 territory codes, ISO 4217
  currency codes, ISO 15924 script codes, and the ISO 8859 character codes
  as well as the UN M.49 area codes.

Analyzing Inductively Coupled Plasma - Mass Spectrometry (ICP-MS) 
    measurement data to evaluate isotope ratios (IRs) is a complex process.
    The 'IsoCor' package facilitates this process and renders it reproducible 
    by providing a function to run a 'Shiny'-App locally in any web browser. 
    In this App the user can upload data files of various formats, select ion 
    traces, apply peak detection and perform calculation of IRs and delta values.
    Results are provided as figures and tables and can be exported.
    The App, therefore, facilitates data processing of ICP-MS experiments to
    quickly obtain optimal processing parameters compared to traditional 'Excel'
    worksheet based approaches. A more detailed description can be found in the
    corresponding article "Data processing made easy: standalone tool for 
    automated calculation of isotope ratio from transient signals – IsoCor" 
    by Tukhmetova et al. in Journal of Analytical Atomic Spectrometry (JAAS).
    The most recent version of 'IsoCor' can be tested online 
    at <https://jali.shinyapps.io/isocor>.