Interpolation and Extrapolation for Species Diversity R package iNEXT version 3.0.2 Provides simple functions to compute and plot two types (sample-size- and coverage-based) rarefaction and extrapolation curves for species diversity (Hill numbers) based on individual-based abundance data or sampling-unit- based incidence data; see Chao and others (2014, Ecological Monographs) for pertinent theory and methodologies, and Hsieh, Ma and Chao (2016, Methods in Ecology and Evolution) for an introduction of the R package. Software Depends: R (>= 3.4) Imports: stats, graphics, ggplot2, reshape2, Rcpp LinkingTo: Rcpp Suggests: testthat, knitr, rmarkdown, gridExtra, ggthemes Anne Chao <chao@stat.nthu.edu.tw> Comprehensive R Archive Network (CRAN) T. C. Hsieh [aut], K. H. Ma [aut], Anne Chao [aut, cre] GPL (>= 3) 2025-07-30 application/tgz https://CRAN.R-project.org/package=iNEXT doi:10.32614/CRAN.package.iNEXT