| listw2sn {spdep} | R Documentation |
The function makes a "spatial neighbour" object representation
(similar to the S-PLUS spatial statististics module representation of a
"listw" spatial weights object. sn2listw() is the inverse function to listw2sn(), creating a "listw" object from a "spatial neighbour" object.
listw2sn(listw) sn2listw(sn)
listw |
a |
sn |
a |
listw2sn()returns a data frame with three columns, and with class spatial.neighbour:
from |
region number id for the start of the link (S-PLUS row.id) |
to |
region number id for the end of the link (S-PLUS col.id) |
weights |
weight for this link |
Roger Bivand Roger.Bivand@nhh.no
columbus <- st_read(system.file("shapes/columbus.shp", package="spData")[1], quiet=TRUE)
col.gal.nb <- read.gal(system.file("weights/columbus.gal", package="spData")[1])
col.listw <- nb2listw(col.gal.nb)
col.listw$neighbours[[1]]
col.listw$weights[[1]]
col.sn <- listw2sn(col.listw)
str(col.sn)