nonlinearTseries: findAllNeighbours – R documentation

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findAllNeighbours

neighbour search

Description

This function finds all the neighbours of all the vectors from Takens' vector array. The neighbours are found using a box assisted algorithm that creates a wrapped grid of a given number of boxes per dimension.

Usage

findAllNeighbours(takens, radius, number.boxes = NULL)

Arguments

`takens`	The matrix containing all the Takens' vectors (see buildTakens).
`radius`	Distance in which the algorithm will search for neighbours.
`number.boxes`	Integer denoting the number of boxes per dimension that will be used to construct a wrapped grid (see Schreiber). If the user does not specify a number of boxes, this function estimates a proper number.

Value

A list in which the n-th position contains another list with all the neighbours of the n-th Takens' vector. If the list is empty, that means that there is no neighbour of the n-th Takens' vector in the given radius.

Author(s)

Constantino A. Garcia

References

Schreiber, T. Efficient neighbor searching in nonlinear time series analysis. Int. J. Bifurcation and Chaos, 5, p. 349, (1995).

Examples

## Not run: 
# Find all the neighbours Takens' vectors build from the Henon time
# series. The size of the neighbourhood is set to 0.1.
h=henon(start = c(0.63954883, 0.04772637), do.plot = FALSE)
takens = buildTakens(h$x,embedding.dim=2,time.lag=1)
neighbours=findAllNeighbours(takens,0.1)

## End(Not run)

nonlinearTseries

Nonlinear Time Series Analysis

v0.2.10

GPL-3

Authors

Constantino A. Garcia [aut, cre], Gunther Sawitzki [ctb]

Initial release

2020-6-10