Follow up on Cohesive.blocks.
For other users of the list, here is the loop I wrote following Gabor's
suggestion. There may be a more parsimonious approach but this worked.
camp <- graph.formula(Harry:Steve:Don:Bert - Harry:Steve:Don:Bert,
Pam:Brazey:Carol:Pat - Pam:Brazey:Carol:Pat,
Holly - Carol:Pat:Pam:Jennie:Bill,
Bill - Pauline:Michael:Lee:Holly,
Pauline - Bill:Jennie:Ann,
Jennie - Holly:Michael:Lee:Ann:Pauline,
Michael - Bill:Jennie:Ann:Lee:John,
Ann - Michael:Jennie:Pauline,
Lee - Michael:Bill:Jennie,
Gery - Pat:Steve:Russ:John,
Russ - Steve:Bert:Gery:John,
John - Gery:Russ:Michael)
campBlocks <- cohesive.blocks(camp)
campBlocks
#get the block membership#
bl <- blocks(campBlocks)
#get the cohesion score for each block#
co <- cohesion(campBlocks)
#create the zero matrix#
cohesionmat <- matrix(0,nrow=18, ncol=18)
#loop over the matrix#
for (b in seq(from=1, to=length(bl))){
for (i in seq(from=1, to=18)){
for (j in seq(from=1, to=18)){
if(i%in%bl[[b]] & j%in%bl[[b]]) cohesionmat[i,j]<-co[b] else next
}
}
}
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