earthUI: An Interactive Interface for the earth (MARS) Package
William Bert Craytor · Zenodo (CERN European Organization for Nuclear Research) · 2026
earthUI is a graphical user interface for the R earth package, which implements Multivariate Adaptive Regression Splines (MARS). It offers three purpose modes—general predictive modeling, real-estate appraisal, and market-area analysis—and guides the user through data import, model configuration, fitting, and the interpretation of earth's diagnostics and graphical output. This article documents earthUI's data-format requirements, modeling workflow, output displays, and complete feature reference.