summary.nb: Print and summary function for neighbours and weights lists
In spdep: Spatial Dependence: Weighting Schemes, Statistics and Models

Description Usage Arguments Author(s) See Also Examples

The function prints summary measures for links in a neighbours list. If a matrix of coordinates is given as well, summary descriptive measures for the link lengths are also printed. Print and summary functions are also available for "listw" weights list objects, also reporting constants (S0, S1, S2) used in inference for global spatial autocorrelation statistics such as Moran's I, Geary's C, join-count tests and Getis-Ord G.

## S3 method for class 'nb'
summary(object, coords=NULL, longlat = NULL, scale = 1, ...)
## S3 method for class 'nb'
print(x, ...)
## S3 method for class 'listw'
summary(object, coords, longlat, zero.policy = NULL,
 scale = 1, ...)
## S3 method for class 'listw'
print(x, zero.policy = NULL, ...)

`object`	an object of class `nb`
`coords`	matrix of region point coordinates or a SpatialPoints object
`longlat`	TRUE if point coordinates are longitude-latitude decimal degrees, in which case distances are measured in kilometers; if coords is a SpatialPoints object, the value is taken from the object itself
`...`	additional arguments affecting the output produced
`x`	an object of class `nb`
`zero.policy`	default NULL, use global option value; if FALSE stop with error for any empty neighbour sets
`scale`	passed through to `stem()` for control of plot length

Roger Bivand Roger.Bivand@nhh.no

plot.nb

example(columbus)
coords <- coordinates(columbus)
col.gal.nb
summary(col.gal.nb, coords)
col.listw <- nb2listw(col.gal.nb, style="W")
col.listw
summary(col.listw)