Determining Groups in Multiples Curves R package clustcurv version 3.0.1 A method for determining groups in multiple curves with an automatic selection of their number based on k-means or k-medians algorithms. The selection of the optimal number is provided by bootstrap methods or other approaches with lower computational cost. The methodology can be applied both in regression and survival framework. Implemented methods are: Grouping multiple survival curves described by Villanueva et al. (2018) <doi:10.1002/sim.8016>. Software Depends: R (>= 3.5.0) Imports: doParallel, doRNG, foreach, ggfortify, ggplot2, Gmedian, grDevices, npregfast, RColorBrewer, survival, survminer Suggests: covr, knitr, plotly, rmarkdown, testthat (>= 3.0.0) Nora M. Villanueva <nmvillanueva@uvigo.es> Comprehensive R Archive Network (CRAN) Nora M. Villanueva [aut, cre] (ORCID: <https://orcid.org/0000-0001-8085-2745>), Marta Sestelo [aut] (ORCID: <https://orcid.org/0000-0003-4284-6509>) MIT + file LICENSE (https://CRAN.R-project.org/package=clustcurv/LICENSE) 2025-12-06 application/tgz https://CRAN.R-project.org/package=clustcurv doi:10.32614/CRAN.package.clustcurv