# Fast Gaussian Process Computation Using Vecchia's Approximation

## Documentation for package ‘GpGp’ version 0.1.1

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

GpGp-package | GpGp: Fast Gaussian Process Computing.
cond_sim | Conditional Simulation using Vecchia's approximation
fast_Gp_sim | Approximate GP simulation
fast_Gp_sim_Linv | Approximate GP simulation with specified Linverse
find_ordered_nn | Find ordered nearest neighbors.
find_ordered_nn_brute | Naive brute force nearest neighbor finder
fit_model | Estimate mean and covariance parameters
GpGp | GpGp: Fast Gaussian Process Computing.
group_obs | Automatic grouping (partitioning) of locations
jason3 | Windspeed measurements from Jason-3 Satellite
Linv_mult | Multiply approximate inverse Cholesky by a vector
Linv_mult_grouped | Multiply approximate inverse Cholesky by a vector
L_mult | Multiply approximate Cholesky by a vector
matern_isotropic | Isotropic Matern covariance function
matern_space_time | Space-time Matern-covariance function
matern_sphere | Isotropic Matern covariance function on sphere
matern_sphere_time | Isotropic Matern covariance function on sphere-time
order_coordinate | Sorted coordinate ordering
order_dist_to_point | Distance to specified point ordering
order_maxmin | Maximum minimum distance ordering
order_middleout | Middle-out ordering
predictions | Compute Gaussian process predictions using Vecchia's approximations
proflik_mean | Profile likelihood (profiling out mean only)
proflik_mean_grouped | Grouped Version of Profile Likelihood (profiling out mean only)
proflik_mean_variance | Profile likelihood (profiling out mean and variance)
proflik_mean_variance_grouped | Grouped Version of Profile Likelihood (profiling out mean and variance)
proflik_variance | Profile likelihood (profiling out variance in mean-zero model)
proflik_variance_grouped | Grouped Version of Profile Likelihood (profiling out variance only)
vecchia_Linv | Inverse Cholesky factor implied by Vecchia's approximation
vecchia_Linv_grouped | Inverse Cholesky factor implied by Vecchia's approximation
vecchia_loglik | Vecchia's approximation to the Gaussian loglikelihood
vecchia_loglik_grouped | Grouped Vecchia's approximation to the Gaussian loglikelihood