This repository contains the R code and datasets used in Martinkova and Hladka's "Computational aspects of psychometric methods. With R", published by Chapman & Hall / CRC Press in 2023, https://doi.org/10.1201/9781003054313. For more information and materials, see the online version of the book at https://www.cs.cas.cz/comps/PsychometricsBook
The R code is separated by chapters. Code for installation of necessary R libraries is included in the A-InstallPackages.R file. Some introductory code with examples from the Appendix is included in the A-IntroductionToR.R file. The code for each chapter (in Ch*.R files) includes lines for loading the packages needed in that chapter.
Datasets are stored in folders. The .csv files may be used in the interactive ShinyItemAnalysis application.
All the files can be downloaded as a .zip file by clicking Code, then Download ZIP. Alternatively, individual chapters can be downloaded separately by clicking on the name of the R file, then clicking the Raw button, and finally saving that page as an .R file.