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.