write.nb.gal {spdep} | R Documentation

## Write a neighbours list as a GAL lattice file

### Description

Write a neighbours list as a GAL lattice file, may also use newer GeoDa header format

### Usage

    write.nb.gal(nb, file, oldstyle=TRUE, shpfile=NULL, ind=NULL)

### Arguments

`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

### Author(s)

Roger Bivand Roger.Bivand@nhh.no

### See Also

`read.gal`

### Examples

    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))

[Package spdep version 0.3-25 Index]