build.nblist {prabclus} | R Documentation |
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
.
build.nblist(prabobj,prab01=NULL,style="C")
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 . |
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. |
Christian Hennig chrish@stats.ucl.ac.uk http://www.homepages.ucl.ac.uk/~ucakche
nb2listw
(which is called)
# Not run; requires package spdep # data(siskiyou) # x <- prabinit(prabmatrix=siskiyou, neighborhood=siskiyou.nb, # distance="logkulczynski") # build.nblist(x)