Rearrangement Correlation Coefficient R package recor version 1.0.3 The Rearrangement Correlation Coefficient is an adjusted version of Pearson's correlation coefficient that accurately measures monotonic dependence relationships, including both linear and nonlinear associations. This method addresses the underestimation problem of classical correlation coefficients in nonlinear monotonic scenarios through improved statistical bounds derived from rearrangement inequalities. For more details, see Ai (2024) <doi:10.52202/079017-1180>. Software Depends: R (>= 3.5.0) Imports: Rcpp (>= 1.0.7) LinkingTo: Rcpp Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Xinbo Ai <axb@bupt.edu.cn> Comprehensive R Archive Network (CRAN) Xinbo Ai [aut, cre] GPL-3 2025-12-15 application/tgz https://CRAN.R-project.org/package=recor doi:10.32614/CRAN.package.recor