Error in FUN(X[[1L]], ...) : as.edgelist.sna input must be an adjacency matrix/array, edgelist matrix, network, or sparse matrix, or list thereof

Question

I am trying to learn few basic functions in Igraph- But, I am having problems computing the degrees from a gragph: see example below (I copied the following example from this site):

Example of data set:

edges <- matrix(c(103, 86, 24, 103, 103, 2, 92, 103, 87, 103, 103, 101, 103, 44), ncol=2, byrow=T)

Create graph

g <- graph(as.vector(t(edges)))

I can compute the degrees from the matrix edges: degree(edges) [1] 378 254 210 390 380 408 294 1230 1084

But I cannot compute the degrees from the graph g:

degree(g)

I am getting the following error:

Error in FUN(X[[1L]], ...) : as.edgelist.sna input must be an adjacency matrix/array, edgelist matrix, network, or sparse matrix, or list thereof.

Anyone knows why I am getting this error?

Because you are calling `degree` from the `sna` package. Unload that package, or use `igraph::degree` to select igraph's `degree` explicitly. — Gabor Csardi, Sep 12 '14 at 18:58

score 5 · Answer 1 · answered Feb 26 '21 at 06:43

5

So what happened here is igraph::degree is masked by sna::degree. Just use:

igraph::degree

and it should work

answered Feb 26 '21 at 06:43

Chirag Pachori

51
1
1

score 2 · Answer 2 · edited Oct 22 '15 at 22:29

2

I ran into same issue. This worked for me:

net <- make_ring(10)
deg <- centralization.degree(net)$res

edited Oct 22 '15 at 22:29

josliber

43,891
12
98
133

answered Oct 22 '15 at 20:38

inivri

29
5

Error in FUN(X[[1L]], ...) : as.edgelist.sna input must be an adjacency matrix/array, edgelist matrix, network, or sparse matrix, or list thereof

Example of data set:

Create graph

2 Answers2