BRISC_order | R Documentation |
The function BRISC_order
outputs the ordering for a set of coordinates, which can be used as an input for
"ordering"
argument in BRISC_estimation
. This is especially useful for avoiding often computationally
intensive location ordering scheme in case of multiple application of BRISC_estimation
on a fixed set of
coordinates.
BRISC_order(coords, order = "Sum_coords", verbose = TRUE)
coords |
an |
order |
keyword that specifies the ordering scheme to be used in ordering the observations. Supported keywords are:
|
verbose |
if |
An integer vector of ordering of the input coordinates which can be used as an input for
"ordering"
argument in BRISC_estimation
.
Arkajyoti Saha arkajyotisaha93@gmail.com,
Abhirup Datta abhidatta@jhu.edu
Saha, A., & Datta, A. (2018). BRISC: bootstrap for rapid inference on spatial covariances. Stat, e184, DOI: 10.1002/sta4.184.
Datta, A., S. Banerjee, A.O. Finley, and A.E. Gelfand. (2016) Hierarchical Nearest-Neighbor Gaussian process models for large geostatistical datasets. Journal of the American Statistical Association, 111:800-812.
Guinness, J. (2018) Permutation and Grouping Methods for
Sharpening Gaussian Process Approximations, Technometrics,
DOI: 10.1080/00401706.2018.1437476,
https://github.com/joeguinness/gp_reorder/tree/master/R .
set.seed(1)
n <- 1000
coords <- cbind(runif(n,0,1), runif(n,0,1))
ordering_result <- BRISC_order(coords)
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