Sampling Strategies for Constructing Core Collections R package SampleCore version 0.1.0 Implements multiple allocation and selection strategies of sampling to construct core collections primarily from clustered or grouped germplasm collection data. Provides methods for allocating entries to clusters/groups based on group sizes, group-wise distance-based diversity metrics, and group-wise diversity index estimates. Includes procedures for selecting entries within clusters/groups through random sampling, genetic distance-based approaches, and optimized diversity metric–based selection methods. See the package documentation for more, including full list of references for the methods implemented. Software Depends: R (>= 3.5) Imports: cluster, DiversityStats, ggplot2, igraph, MASS, mathjaxr, prospectr, Rdpack, Rtsne, stats, vegan Suggests: biotools, dbscan, EvaluateCore, fastcluster, knitr, pander, rmarkdown J. Aravind <j.aravind@icar.org.in> Comprehensive R Archive Network (CRAN) J. Aravind [aut, cre] (ORCID: <https://orcid.org/0000-0002-4791-442X>), Suman Roy [aut] (ORCID: <https://orcid.org/0000-0001-5612-8415>), Anju Mahendru Singh [aut] (ORCID: <https://orcid.org/0000-0001-6958-1630>), ICAR-NBGPR [cph] (ROR: <https://ror.org/00scbd467>, url: https://nbpgr.org.in/) GPL (>= 2) 2026-05-28 application/tgz https://CRAN.R-project.org/package=SampleCore doi:10.32614/CRAN.package.SampleCore