Can you share the data?
On Tue, 4 Jun 2019 at 15:57, Alexandre Souza <mraguga.so...@gmail.com>
wrote:
>
> Hello Gabor,
> How are you!?
>
> I would like to understand with you about methods degree e betweness.
>
> I am compare this methods with sna methods for the same graph and the
> result are differents.
>
> This is my single graph:
>
> rede4 <- read.table("c:/temp/Exemplo Rede_4_vertices.csv",header=TRUE,sep
> = ";", dec=",")
> # Adaptando o data.frame rede para que possa servir para a montagem da rede
> grede4 <- rede4[,2:5]
> rownames(grede4) <- rede4[,1]
> rownames(grede4)
>
> Look my results about SNA:
>
> > sna::degree(grede4,gmode="graph",cmode="indegree")
> [1] 2 2 2 2
> > sna::closeness(grede4,gmode="graph")
> [1] 0.75 0.75 0.75 0.75
> > sna::betweenness(grede4,gmode="graph")
> [1] 0.5 0.5 0.5 0.5
>
> Look my results about igraph:
>
> library("igraph")
> #transformando one-mode network matrix into an igraph object,
> a = as.matrix(as.data.frame(lapply(grede4, as.numeric)))
> a
> net1 <- graph_from_adjacency_matrix(a, mode="undirected", weighted=NULL)
> net1
>
> > degree(net1, mode="out")
> A B C D
> 4 4 4 4
> > closeness(net1, mode="all")
> A B C D
> 0.25 0.25 0.25 0.25
> > betweenness(net1)
> A B C D
> 0.5 0.5 0.5 0.5
>
> Can you help-me understand why the results about degree is different?
>
> grown up my graph, another differences show on.
>
> thanks very much.
>
> best regards.
>
> Att.
>
>
>
>
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