Provides functions for efficiently fitting linear models with spatially correlated errors by robust and Gaussian (Restricted) Maximum Likelihood and for computing robust and customary point and block external-drift Kriging predictions, along with utility functions for variogram modelling in ad hoc geostatistical analyses, model building, model evaluation by cross-validation, (conditional) simulation of Gaussian processes, unbiased back-transformation of Kriging predictions of log-transformed data.
2012-12-14 georob Version 0.1-0 released! 2013-09-06 georob Version 0.1-1 released to CRAN 2014-05-15 georob Version 0.1-3 released to CRAN, new features: stepwise selection of covariates for trend model, changes for version 3 of package RandomFields 2014-06-02 georob Version 0.1-4 released to CRAN 2014-08-28 georob Version 0.1-5 released to CRAN, new features: Gaussian ML estimation, parallelised matrix multiplication 2015-09-02 georob Version 0.2-1 released to CRAN, new features: Gaussian (RE)ML of re-parametrized variogram; new function for computing profile likelihood, multiple changes for reducing computational effort; optional computation of covariances for long-tailed errors 2015-12-02 georob Version 0.2-2 released to CRAN, new features: better error diagnostics, generic and methods for computing sample variograms, new functions to set default values for variogram parameters, extended plot method for class georob with residual diagnostic plots 2016-03-01 georob Version 0.2-3 released to CRAN, new features: correcting error in setting default values for fit.param, minor changes for diagnostics plots 2016-07-26 georob Version 0.2-4 released to CRAN, new features: vignette with a tutorial and manual; changes in interface of georob and for parallel computations. 2016-09-06 georob Version 0.3-0 released to CRAN, new features: estimating parameters of "nested" variogram models. 2016-09-06 georob Version 0.3-1 released to CRAN, correction of minor bug in internal function. 2016-11-28 georob Version 0.3-2 released to CRAN, correction of errors in 3d anisotropic variogram modelling and for computing kriging predictions for models with intrinsic variograms. 2017-01-24 georob Version 0.3-3 released to CRAN, correction of minor bug for fitting 3d anisotropic variogram models to sample variograms. 2017-05-09 georob Version 0.3-4 released to CRAN, correction of minor bug for computing robust initial values of regression coefficients by rq(). 2017-10-20 georob Version 0.3-5 released to CRAN, new function coef(). 2018-01-26 georob Version 0.3-6 released to CRAN, new function condsim() for (un)conditional simulation from a fitted georob object. 2018-08-27 georob Version 0.3-6 released to CRAN, minor change of arguments of functions for model building. 2018-11-25 georob Version 0.3-7 released to CRAN, minor change of function for (conditional) simulation. 2019-03-29 georob Version 0.3-8 released to CRAN, changes required by new version 3.3.6 of package RandomFields. 2019-04-07 georob Version 0.3-9 released to CRAN, correction of error when computing semivariances for anisotropic variograms introduced in Version 0.3-8; possibility to choose optimizer in fit.variogram.model()