Tests on Properties of Space-Time Covariance Functions R package covatest version 1.2.5 Tests on properties of space-time covariance functions. Tests on symmetry, separability and for assessing different forms of non-separability are available. Moreover tests on some classes of covariance functions, such that the classes of product-sum models, Gneiting models and integrated product models have been provided. It is the companion R package to the papers of Cappello, C., De Iaco, S., Posa, D., 2018, Testing the type of non-separability and some classes of space-time covariance function models <doi:10.1007/s00477-017-1472-2> and Cappello, C., De Iaco, S., Posa, D., 2020, covatest: an R package for selecting a class of space-time covariance functions <doi:10.18637/jss.v094.i01>. Software Depends: R(>= 3.4.0) Imports: utils, stats, graphics, mathjaxr, methods, lubridate, V8, zoo, gstat, sp (>= 0.9-72), spacetime (>= 1.0-0) Suggests: sf Sandra De Iaco <sandra.deiaco@unisalento.it> Comprehensive R Archive Network (CRAN) Sandra De Iaco [aut, cre], Claudia Cappello [aut], Donato Posa [aut], Sabrina Maggio [ctb] GPL (>= 2.0) 2026-05-16 application/tgz https://CRAN.R-project.org/package=covatest doi:10.32614/CRAN.package.covatest