'DEXi' Decision Tree Analysis and Visualization R package dexisensitivity version 1.0.2 Provides a versatile toolkit for analyzing and visualizing 'DEXi' (Decision EXpert for education) decision trees, facilitating multi-criteria decision analysis directly within R. Users can read .dxi files, manipulate decision trees, and evaluate various scenarios. It supports sensitivity analysis through Monte Carlo simulations, one-at-a-time approaches, and variance-based methods, helping to discern the impact of input variations. Additionally, it includes functionalities for generating sampling plans and an array of visualization options for decision trees and analysis results. A distinctive feature is the synoptic table plot, aiding in the efficient comparison of scenarios. Whether for in-depth decision modeling or sensitivity analysis, this package stands as a comprehensive solution. Definition of sensitivity analyses available in Carpani, Bergez and Monod (2012) <doi:10.1016/j.envsoft.2011.10.002> and detailed description of the package soon available in Alaphilippe et al. (2025) <doi:10.1016/j.simpa.2024.100729>. Software Depends: R (>= 4.1.0) Imports: methods, XML, AlgDesign, grDevices, graphics, plotrix, genalg, dplyr, ggplot2, testthat (>= 3.0.0), xml2 Suggests: sloop, vdiffr Nicolas Cavan <nicolas.cavan@inrae.fr> Comprehensive R Archive Network (CRAN) Roland Allart [aut], Jacques-Eric Bergez [aut] (ORCID: <https://orcid.org/0000-0003-3467-2617>), Marta Carpani [aut], Hervé Monod [aut] (ORCID: <https://orcid.org/0000-0001-8225-495X>), Aude Alaphilippe [ctb] (ORCID: <https://orcid.org/0000-0002-4504-2728>), Nicolas Cavan [ctb, cre], INRAE [cph] ((National Research Institute for Agriculture, Food and Environment, France)) GPL (>= 2) 2025-09-08 application/tgz https://CRAN.R-project.org/package=dexisensitivity doi:10.32614/CRAN.package.dexisensitivity