el2sm function

Edgelist to sociomatrix

Construction of a sociomatrix from an edgelist

el2sm(el,directed=TRUE,nadiag=all(el[,1]!=el[,2]))

Arguments

• el: a matrix in which each row contains the indices of an edge and possibly the weight for the edge
• directed: if FALSE, then a relation is placed in both entry ij and ji of the sociomatrix, for each edge ij (or ji)
• nadiag: put NAs on the diagonal

Returns

a sociomatrix

Examples

Y<-matrix(rpois(10*10,.5),10,10) ; diag(Y)<-NA
E<-sm2el(Y) 
el2sm(E) - Y

Author(s)

Peter Hoff