r - structural holes and adjacency matrix -

i working on problem find measures related structure holes in r. problem when apply code below save adjacency matrix variable called "x" (copied source) adjacency matrix in r gives me error like:

"error in as.data.frame.default(d) : cannot coerce class ""igraph"" data.frame"

my code , data set looks data frame

s1    uid1 uid2     1     1    2     2     1    3     3     1    4     4     1    5     5     2    3    6     2    4     7     2    5     8     3    4     9     3    5     10    4    5    11    6    7     12    6    8     13    6    9     14    7    8     15    7    9     16    8    9     17    1    6    18    1    7    19    6    7 

when apply code error becomes on here

x <- get.adjacency(graph.data.frame(graph.edgelist(as.matrix(s1), directed=f))) 

error in as.data.frame.default(d) : cannot coerce class ""igraph"" data.frame

so use code structure holes measure

y <- index.egonet(x) #desired output code 

you going

data.frame (s1)               -->      matrix                     -->       graph via graph.edgelist -->         trying create graph again via graph.data.frame 

and that's why you're getting error, because have graph, , graph.data.frame() expects data.frame input, not igraph object. that's error message saying:

error in as.data.frame.default(d) : cannot coerce class ""igraph"" data.frame

i.e - "don't give me 'igraph' object, want data.frame"

the end conclusion of - go source data.frame igraph object, extract adjacency matrix:

get.adjacency(graph.data.frame(s1, directed=f))