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Symmetrizes the elements of mats according to the rule in rule.

mats

rule

symmetrize(mats, rule="weak", return.as.edgelist=FALSE)

a graph or graph stack.

one of ``upper'', ``lower'', ``strong'' or ``weak''.

logical; should the symmetrized graphs be returned in edgelist form?

The symmetrized graph stack

The rules used by symmetrize are as follows:

symmetrize

upper: Copy the upper triangle over the lower triangle

lower: Copy the lower triangle over the upper triangle

strong: i<->j iff i->j and i<-j (AND rule)

weak: i<->j iff i->j or i<-j (OR rule)

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

# NOT RUN { #Generate a graph g<-rgraph(5) #Weak symmetrization symmetrize(g) #Strong symmetrization symmetrize(g,rule="strong") # }

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