write.nb.gal {spdep} | R Documentation |
Write a neighbours list as a GAL lattice file, may also use newer GeoDa header format
write.nb.gal(nb, file, oldstyle=TRUE, shpfile=NULL, ind=NULL)
nb |
an object of class nb with a list of integer vectors containing neighbour region number ids. |
file |
name of file with GAL lattice data |
oldstyle |
if TRUE, first line of file contains only number of spatial units, if FALSE, uses newer GeoDa style |
shpfile |
Shapefile name taken from GAL file for this dataset |
ind |
region id indicator variable name |
Roger Bivand Roger.Bivand@nhh.no
data(columbus) ind <- rownames(columbus) GALfile <- tempfile("GAL") write.nb.gal(col.gal.nb, GALfile, oldstyle=FALSE, ind="ind") col.queen <- read.gal(GALfile, region.id=ind) unlink(GALfile) summary(diffnb(col.queen, col.gal.nb))