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")

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.

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.

Author

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

Examples

Run this code

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