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.
summary.nb(object, coords=NULL, longlat = NULL, scale = 1, ...) print.nb(x, ...) summary.listw(object, coords, longlat, zero.policy = FALSE, scale = 1, ...) print.listw(x, zero.policy = FALSE, ...)
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 |
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
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)