Package: mkin Type: Package Title: Kinetic Evaluation of Chemical Degradation Data Version: 1.2.5 Date: 2023-08-09 Authors@R: c( person("Johannes", "Ranke", role = c("aut", "cre", "cph"), email = "johannes.ranke@jrwb.de", comment = c(ORCID = "0000-0003-4371-6538")), person("Katrin", "Lindenberger", role = "ctb", comment = "contributed to mkinresplot()"), person("René", "Lehmann", role = "ctb", comment = "ilr() and invilr()"), person("Eurofins Regulatory AG", role = "cph", comment = "copyright for some of the contributions of JR 2012-2014")) Description: Calculation routines based on the FOCUS Kinetics Report (2006, 2014). Includes a function for conveniently defining differential equation models, model solution based on eigenvalues if possible or using numerical solvers. If a C compiler (on windows: 'Rtools') is installed, differential equation models are solved using automatically generated C functions. Heteroscedasticity can be taken into account using variance by variable or two-component error models as described by Ranke and Meinecke (2018) . Hierarchical degradation models can be fitted using nonlinear mixed-effects model packages as a back end as described by Ranke et al. (2021) . Please note that no warranty is implied for correctness of results or fitness for a particular purpose. Depends: R (>= 2.15.1), Imports: stats, graphics, methods, parallel, deSolve (>= 1.35), R6, inline (>= 0.3.19), numDeriv, lmtest, pkgbuild, nlme (>= 3.1-151), saemix (>= 3.1), rlang, vctrs Suggests: knitr, rbenchmark, tikzDevice, testthat, rmarkdown, covr, vdiffr, benchmarkme, tibble, stats4, readxl License: GPL LazyLoad: yes LazyData: yes Encoding: UTF-8 Language: en-GB VignetteBuilder: knitr BugReports: https://github.com/jranke/mkin/issues/ URL: https://pkgdown.jrwb.de/mkin/ Roxygen: list(markdown = TRUE) RoxygenNote: 7.2.3