# summary.nb

From spdep v0.6-9
by Roger Bivand

##### Print and summary function for neighbours and weights lists

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.

- Keywords
- spatial

##### Usage

```
"summary"(object, coords=NULL, longlat = NULL, scale = 1, ...)
"print"(x, ...)
"summary"(object, coords, longlat, zero.policy = NULL, scale = 1, ...)
"print"(x, zero.policy = NULL, ...)
```

##### Arguments

- 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

##### See Also

##### Examples

```
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)
```

*Documentation reproduced from package spdep, version 0.6-9, License: GPL (>= 2)*

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