A Numerical Implementation of Interval-Valued Kriging R package intkrige version 1.0.2 An interval-valued extension of ordinary and simple kriging. Optimization of the function is based on a generalized interval distance. This creates a non-differentiable cost function that requires a differentiable approximation to the absolute value function. This differentiable approximation is optimized using a Newton-Raphson algorithm with a penalty function to impose the constraints. Analyses in the package are driven by the 'intsp' and 'intgrd' classes, which are interval-valued extensions of 'SpatialPointsDataFrame' and 'SpatialPixelsDataFrame' respectively. The package includes several wrappers to functions in the 'gstat' and 'sp' packages. Software Depends: R (>= 3.5.0), sp (>= 1.3-1), gstat, raster Imports: Rcpp, Rdpack, methods, stats, utils LinkingTo: Rcpp, RcppArmadillo Suggests: doParallel, foreach, lattice, latticeExtra, grid, gridExtra, testthat, knitr, rmarkdown Brennan Bean <brennan.bean@usu.edu> Comprehensive R Archive Network (CRAN) Brennan Bean [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=intkrige/LICENSE) 2025-09-21 application/tgz https://CRAN.R-project.org/package=intkrige doi:10.32614/CRAN.package.intkrige