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GeoModels (version 2.0.9)

Procedures for Gaussian and Non Gaussian Geostatistical (Large) Data Analysis

Description

Functions for Gaussian and Non Gaussian (bivariate) spatial and spatio-temporal data analysis are provided for a) (fast) simulation of random fields, b) inference for random fields using standard likelihood and a likelihood approximation method called weighted composite likelihood based on pairs and b) prediction using (local) best linear unbiased prediction. Weighted composite likelihood can be very efficient for estimating massive datasets. Both regression and spatial (temporal) dependence analysis can be jointly performed. Flexible covariance models for spatial and spatial-temporal data on Euclidean domains and spheres are provided. There are also many useful functions for plotting and performing diagnostic analysis. Different non Gaussian random fields can be considered in the analysis. Among them, random fields with marginal distributions such as Skew-Gaussian, Student-t, Tukey-h, Sin-Arcsin, Two-piece, Weibull, Gamma, Log-Gaussian, Binomial, Negative Binomial and Poisson. See the URL for the papers associated with this package, as for instance, Bevilacqua and Gaetan (2015) , Bevilacqua et al. (2016) , Vallejos et al. (2020) , Bevilacqua et. al (2020) , Bevilacqua et. al (2021) , Bevilacqua et al. (2022) , Morales-Navarrete et al. (2023) , and a large class of examples and tutorials.

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Version

Install

install.packages('GeoModels')

Monthly Downloads

804

Version

2.0.9

License

GPL (>= 3)

Maintainer

Moreno Bevilacqua

Last Published

January 7th, 2025

Functions in GeoModels (2.0.9)

CompIndLik2

Optimizes the Composite indipendence log-likelihood
GeoCorrFct

Spatial and Spatio-temporal correlation or covariance of (non) Gaussian random fields
GeoCorrFct_Cop

Spatial and Spatio-temporal correlation or covariance of (non) Gaussian random fields (copula models)
GeoCovDisplay

Image plot displaying the pattern of the sparsness of a covariance matrix.
CompLik

Optimizes the Composite log-likelihood
GeoAniso

Spatial Anisotropy correction
CorrelationPar

Lists the Parameters of a Correlation Model
GeoCV

n-fold kriging Cross-validation
CompLik2

Optimizes the Composite log-likelihood
CorrParam

Lists the Parameters of a Correlation Model
CkType

Checking Likelihood Objects
CkLikelihood

Checking Composite-likelihood Type
CheckST

Checking SpaceTime covariance models
CheckBiv

Checking Bivariate covariance models
CkCorrModel

Checking Correlation Model
anomalies

Annual precipitation anomalies in U.S.
CheckDistance

Checking Distance
CkInput

Checking Input
CheckSph

Checking if a covariance is valid only on the sphere
CkModel

Checking Random Field type