Comparison of Phylogenetic Trees Using Quartet and Split Measures R package Quartet version 1.3.0 CRAN Task View: Phylogenetics (https://CRAN.R-project.org/view=Phylogenetics) Calculates the number of four-taxon subtrees consistent with a pair of cladograms, calculating the symmetric quartet distance of Bandelt & Dress (1986), Reconstructing the shape of a tree from observed dissimilarity data, Advances in Applied Mathematics, 7, 309-343 <doi:10.1016/0196-8858(86)90038-2>, and using the tqDist algorithm of Sand et al. (2014), tqDist: a library for computing the quartet and triplet distances between binary or general trees, Bioinformatics, 30, 2079–2080 <doi:10.1093/bioinformatics/btu157> for pairs of binary trees. Software Depends: R (>= 3.5.0), TreeTools (>= 1.4.0), Imports: ape, PlotTools, Rdpack (>= 0.7), Ternary (>= 1.0), viridisLite, LinkingTo: Rcpp Suggests: bookdown, knitr, phangorn, Rcpp, rmarkdown, testthat, usethis, vdiffr, Martin R. Smith <martin.smith@durham.ac.uk> Comprehensive R Archive Network (CRAN) Martin R. Smith [aut, cre, cph] (ORCID: <https://orcid.org/0000-0001-5660-1727>), Andreas Sand [ant], Gerth Stølting Brodal [ant], Rolf Fagerberg [ant], Thomas Mailund [ant], Christian N. S. Pedersen [ant] (ORCID: <https://orcid.org/0000-0002-8947-6771>), Jens Johansen [ant], Morten K. Holt [ant] GPL (>= 2) 2026-03-19 application/tgz https://CRAN.R-project.org/package=Quartet doi:10.32614/CRAN.package.Quartet en-GB