as.matrix.igraph {igraph} | R Documentation |
Get adjacency or edgelist representation of the network stored as an
igraph
object.
## S3 method for class 'igraph'
as.matrix(x, matrix.type = c("adjacency", "edgelist"), ...)
x |
object of class igraph, the network |
matrix.type |
character, type of matrix to return, currently "adjacency" or "edgelist" are supported |
... |
other arguments to/from other methods |
If matrix.type
is "edgelist"
, then a two-column numeric edge list
matrix is returned. The value of attrname
is ignored.
If matrix.type
is "adjacency"
, then a square adjacency matrix is
returned. For adjacency matrices, you can use the attr
keyword argument
to use the values of an edge attribute in the matrix cells. See the
documentation of as_adjacency_matrix for more details.
Other arguments passed through ...
are passed to either
as_adjacency_matrix
or as_edgelist
depending on the value of matrix.type
.
Depending on the value of matrix.type
either a square
adjacency matrix or a two-column numeric matrix representing the edgelist.
Michal Bojanowski, originally from the intergraph
package
as_adjacency_matrix
, as_edgelist
g <- make_graph("zachary")
as.matrix(g, "adjacency")
as.matrix(g, "edgelist")
# use edge attribute "weight"
E(g)$weight <- rep(1:10, each=ecount(g))
as.matrix(g, "adjacency", sparse=FALSE, attr="weight")