network.edgecount {network} | R Documentation |
network.edgecount
returns the number of edges within a network
, removing those flagged as missing if desired.
network.edgecount(x, na.omit = TRUE)
x |
an object of class |
na.omit |
logical; omit edges with |
The return value network.edgecount
is equal to x%n%"mnext"-1
, minus the number of NULL
edges (and missing edges, if na.omit==TRUE
). Note that g%n%"mnext"-1
cannot, by itself, be counted upon to be an accurate count of the number of edges!
The number of edges
network.edgecount
uses the real state of the network object to count edges, not the state it hypothetically should have. Thus, if you add extra edges to a non-multiplex network, directed edges to an undirected network, etc., the actual number of edges in the object will be returned (and not the number you would expect if you relied only on the putative number of possible edges as reflected by the network.indicators). Don't create network
objects with contradictory attributes unless you know what you are doing.
Carter T. Butts buttsc@uci.edu
Butts, C. T. (2008). “network: a Package for Managing Relational Data in R.” Journal of Statistical Software, 24(2). http://www.jstatsoft.org/v24/i02/
#Create a network with three edges m<-matrix(0,3,3) m[1,2]<-1; m[2,3]<-1; m[3,1]<-1 g<-network(m) network.edgecount(g)==3 #Verify the edgecount