prabclus: build.nblist – R documentation

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build.nblist

Generate spatial weights from prabclus neighborhood list

Description

This generates a listw-object as needed for estimation of a simultaneous autoregression model in package spdep from a neighborhood list of the type generated in prabinit.

Usage

build.nblist(prabobj,prab01=NULL,style="C")

Arguments

`prabobj`	object of class `prab`.
`prab01`	presence-absence matrix of same dimensions than the abundance matrix of `prabobj`. This specifies the presences and absences on which the presence/absence step of abundance-based tests is based (see details). If `NULL` (which is usually the only reasonable choice), `prab01` is computed in order to indicate the nonzeroes of `prabobj$prab`.
`style`	can take values "W", "B", "C", "U", and "S" though tests suggest that "C" should be chosen. See `nb2listw`.

Value

A 'listw' object with the following members:

`style`	see above.
`neighbours`	the neighbours list in `spdep`-format.
`weights`	the weights for the neighbours and chosen style, with attributes set to report the type of relationships (binary or general, if general the form of the glist argument), and style as above.

Author(s)

Christian Hennig christian.hennig@unibo.it https://www.unibo.it/sitoweb/christian.hennig/en

Examples

# Not run; requires package spdep
# data(siskiyou)
# x <- prabinit(prabmatrix=siskiyou, neighborhood=siskiyou.nb,
#             distance="logkulczynski")
# build.nblist(x)

prabclus

Functions for Clustering and Testing of Presence-Absence, Abundance and Multilocus Genetic Data

v2.3-2

GPL

Authors

Christian Hennig <christian.hennig@unibo.it>, Bernhard Hausdorf <Hausdorf@zoologie.uni-hamburg.de>

Initial release

2020-01-06