"Density Overall" and "Network Centralization"

[Cadu]

In UCINET there are two measures related to the whole network:

- Density Overall (Network => Cohesion => Density => Density Overall)
- Network Centralization (Network => Cohesion => Centrality => Degree)

In Visone, I got just measures to each node, but nothing to the whole
network. Is there any way to do this in Visone?

Thanks,
Cadu

[Bobo]

Hi Cadu,

- information on the number of nodes and edges is displayed in the
lower left corner of the visone window... use these to calculate the
density directly

- regarding network centralization please refer to Lydia's post on
betweenness centralization

all the best,
Bobo

[Cadu]

Bobo,

Just clarifying:

a) I read Lydia's post. So, to calculate "Network Centralization" I
will substitute "betweenness" with "degree" in the R code command, is
it?
x <- V(g)$degree
sum(max(x)-x)/(length(x)-1)

b) Visone doesn't calculate automatically "Density Overall". To
calculate density I nedd to do it manually (e.g. excel), isn't it?
Is there any possibility to do it in R through Visone interface?

Thanks indeed,
Cadu

[Bobo]

Hi Cadu,

a) yes, you have to substitute betweenness with degree (but also in
the first and second step of the description!)

b) network density is just the number of edges divided by the number
of possible edges (which is n*(n-1)/2 for undirected network that do
not allow self loops; n refers to the number of actors). thus, use any
calculator or use the corresponding command within the R console:
graph.density(g)
(assuming that you named your network "g")

all the best,
Bobo