Facilitate Exploration of touRR optimisatioN R package ferrn version 0.3.0 CRAN Task View: DynamicVisualizations (https://CRAN.R-project.org/view=DynamicVisualizations) Diagnostic plots for optimisation, with a focus on projection pursuit. These show paths the optimiser takes in the high-dimensional space in multiple ways: by reducing the dimension using principal component analysis, and also using the tour to show the path on the high-dimensional space. Several botanical colour palettes are included, reflecting the name of the package. A paper describing the methodology can be found at <https://journal.r-project.org/articles/RJ-2021-105/index.html>. Software Depends: R (>= 4.1.0) Imports: rlang (>= 0.1.2), dplyr, magrittr, scales, gganimate, ggplot2, tibble, purrr, tourr, stringr, ggrepel, ggforce, tidyr, cli, progress, glue, GpGp Suggests: roxygen2, covr, pkgdown, testthat, forcats, patchwork, future.apply, ash, vdiffr H. Sherry Zhang <huizezhangsh@gmail.com> Comprehensive R Archive Network (CRAN) H. Sherry Zhang [aut, cre] (ORCID: <https://orcid.org/0000-0002-7122-1463>), Dianne Cook [aut] (ORCID: <https://orcid.org/0000-0002-3813-7155>), Ursula Laa [aut] (ORCID: <https://orcid.org/0000-0002-0249-6439>), Nicolas Langrené [aut] (ORCID: <https://orcid.org/0000-0001-7601-4618>), Patricia Menéndez [aut] (ORCID: <https://orcid.org/0000-0003-0701-6315>) MIT + file LICENSE (https://CRAN.R-project.org/package=ferrn/LICENSE) 2025-11-20 application/tgz https://CRAN.R-project.org/package=ferrn doi:10.32614/CRAN.package.ferrn en-GB