nonlinearTseries: neighbourSearch – R documentation

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neighbourSearch

neighbour search

Description

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

Usage

neighbourSearch(takens, positionTakens, radius, number.boxes = NULL)

Arguments

`takens`	The matrix containing all the Takens' vectors (see buildTakens).
`positionTakens`	Integer denoting the Takens' vector whose neighbours will be searched.
`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 containing all the neighbours of the positionTakens-th Takens' vector. If the list is empty, that means that there is no neighbour of the positionTakens-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).