Finds the k nearest neighbours in a dataset of specified points,
adding the option to wrap certain variables on a torus. The user chooses
the algorithm to use to find the nearest neighbours.
Maintainer: Paul J. Northrop p.northrop@ucl.ac.uk [copyright holder]
The function nnt performs the nearest neighbour
search. There is also a rudimentary plot method: plot.nnt.
The default algorithm is that provided by the function
nn2 in the RANN-package.
Another possibility is the knn function in the
nabor-package.
See vignette("donut-vignette", package = "donut") for an
overview of the package.
Arya, S., Mount, D., Kemp, S. E. and Jefferis, G. (2019) RANN: Fast Nearest Neighbour Search (Wraps ANN Library) Using L2 Metric. R package version 2.6.1. https://CRAN.R-project.org/package=RANN
Elseberg J., Magnenat S., Siegwart R., Nuchter, A. (2012) Comparison of nearest-neighbor-search strategies and implementations for efficient shape registration. Journal of Software Engineering for Robotics (JOSER), 3(1), 2-12 https://CRAN.R-project.org/package=nabor
nnt for nearest neighbour with some variables
wrapped on a torus.
plot.nnt plot method for objects returned from
nnt (1 and 2 dimensional data only).