build.nblist: Generate spatial weights from prabclus neighborhood list

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

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 [e-mail] https://www.unibo.it/sitoweb/christian.hennig/en

See Also

nb2listw (which is called)

Examples

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

prabclus documentation built on Sept. 24, 2024, 5:07 p.m.