sna (version 2.8)

isolates: List the Isolates in a Graph or Graph Stack

Description

Returns a list of the isolates in the graph or graph set given by dat.

Usage

isolates(dat, diag=FALSE)

Value

A vector containing the isolates, or a list of vectors if more than one graph was specified

Arguments

dat

one or more input graphs.

diag

boolean indicating whether adjacency matrix diagonals (i.e., loops) contain meaningful data.

Author

Carter T. Butts

References

Wasserman, S., and Faust, K. (1994). Social Network Analysis: Methods and Applications. Cambridge: Cambridge University Press.

West, D.B. (1996). Introduction to Graph Theory. Upper Saddle River, NJ: Prentice Hall.

See Also

is.isolate, add.isolates

Examples

#Generate a test graph
g<-rgraph(20)
g[,4]<-0          #Create an isolate
g[4,]<-0

#List the isolates
isolates(g)