Remove duplicate edges from an edge sequence — unique.igraph.es • igraph

Remove duplicate edges from an edge sequence

# S3 method for class 'igraph.es'
unique(x, incomparables = FALSE, ...)

Arguments

x: An edge sequence.
incomparables: a vector of values that cannot be compared. Passed to base function duplicated. See details there.
...: Passed to base function duplicated().

Value

An edge sequence with the duplicate vertices removed.

See also

Other vertex and edge sequence operations: c.igraph.es(), c.igraph.vs(), difference.igraph.es(), difference.igraph.vs(), igraph-es-indexing, igraph-es-indexing2, igraph-vs-indexing, igraph-vs-indexing2, intersection.igraph.es(), intersection.igraph.vs(), rev.igraph.es(), rev.igraph.vs(), union.igraph.es(), union.igraph.vs(), unique.igraph.vs()

Examples

g <- make_(ring(10), with_vertex_(name = LETTERS[1:10]))
E(g)[1, 1:5, 1:10, 5:10]
#> + 22/10 edges from 616925a (vertex names):
#>  [1] A--B A--B B--C C--D D--E E--F A--B B--C C--D D--E E--F F--G G--H H--I I--J
#> [16] A--J E--F F--G G--H H--I I--J A--J
E(g)[1, 1:5, 1:10, 5:10] %>% unique()
#> + 10/10 edges from 616925a (vertex names):
#>  [1] A--B B--C C--D D--E E--F F--G G--H H--I I--J A--J