nblag {spdep} | R Documentation |
The function creates higher order neighbour lists, where higher order neighbours are only lags
links from each other on the graph described by the input neighbours list. It will refuse to lag neighbours lists with the attribute self.included set to TRUE.
nblag(neighbours, maxlag)
neighbours |
input neighbours list of class nb |
maxlag |
the maximum lag to be constructed |
returns a list of lagged neighbours lists each with class nb
Roger Bivand Roger.Bivand@nhh.no
data(columbus) summary(col.gal.nb, coords) library(maptools) plot(polys, border="grey", forcefill=FALSE) plot(col.gal.nb, coords, add=TRUE) title(main="GAL order 1 (black) and 2 (red) links") col.lags <- nblag(col.gal.nb, 2) summary(col.lags[[2]], coords) plot(col.lags[[2]], coords, add=TRUE, col="red", lty=2)