Remove duplicate edges from an edge sequence
Usage
# 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().
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]
#> ── <edge sequence> 22/10 · vertex names · from cc5601d ─────────────────────────
#> [1] A ─ B A ─ B B ─ C C ─ D D ─ E E ─ F A ─ B B ─ C C ─ D D ─ E
#> [11] E ─ F F ─ G G ─ H H ─ I I ─ J A ─ J E ─ F F ─ G G ─ H H ─ I
#> [21] I ─ J A ─ J
E(g)[1, 1:5, 1:10, 5:10] %>% unique()
#> ── <edge sequence> 10/10 · vertex names · from cc5601d ─────────────────────────
#> [1] A ─ B B ─ C C ─ D D ─ E E ─ F F ─ G G ─ H H ─ I I ─ J A ─ J