summary.nb {spdep} | R Documentation |
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.
## 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 |
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 |
zero.policy |
default NULL, use global option value; if FALSE stop with error for any empty neighbour sets |
scale |
passed through to |
Roger Bivand Roger.Bivand@nhh.no
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)