Functions for fitting and doing predictions with Gaussian process models using Vecchia's (1988) approximation. Package also includes functions for reordering input locations, finding ordered nearest neighbors (with help from 'FNN' package), grouping operations, and conditional simulations. Covariance functions for spatial and spatialtemporal data on Euclidean domains and spheres are provided. The original approximation is due to Vecchia (1988) <http://www.jstor.org/stable/2345768>, and the reordering and grouping methods are from Guinness (2018) <doi:10.1080/00401706.2018.1437476>. Model fitting employs a Fisher scoring algorithm described in Guinness (2019) <arXiv:1905.08374>.
Package details 


Author  Joseph Guinness [aut, cre], Matthias Katzfuss [aut] 
Maintainer  Joseph Guinness <[email protected]> 
License  MIT + file LICENSE 
Version  0.2.1 
Package repository  View on CRAN 
Installation 
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