Delete vertices from a graph

Delete vertices from a graph

Usage

delete_vertices(graph, v)

Arguments

graph

The input graph.

v

The vertices to remove, a vertex sequence.

Value

The graph, with the vertices removed.

Related documentation in the C library

delete_vertices(), vcount()

See also

Other functions for manipulating graph structure: +.igraph(), add_edges(), add_vertices(), complementer(), compose(), connect(), contract(), delete_edges(), difference(), difference.igraph(), disjoint_union(), edge(), igraph-minus, intersection(), intersection.igraph(), path(), permute(), rep.igraph(), reverse_edges(), simplify(), transitive_closure(), union(), union.igraph(), vertex()

Examples

g <- make_ring(10) %>%
  set_vertex_attr("name", value = LETTERS[1:10])
g
#> ── <igraph> Ring graph ────────────────────────────────────────────── 508b2dd ──
#> ℹ undirected · named
#> ℹ 10 vertices · 10 edges
#> 
#> ── Attributes ──────────────────────────────────────────────────────────────────
#> → graph:  name <chr>, mutual <lgl>, circular <lgl>
#> → vertex: name <chr>
#> 
#> ── Edges (vertex names) ────────────────────────────────────────────────────────
#>  [1] A ─ B  B ─ C  C ─ D  D ─ E  E ─ F  F ─ G  G ─ H  H ─ I  I ─ J  A ─ J 
V(g)
#> ── <vertex sequence> 10/10 · named · from 508b2dd ──────────────────────────────
#>  [1] A B C D E F G H I J

g2 <- delete_vertices(g, c(1, 5)) %>%
  delete_vertices("B")
g2
#> ── <igraph> Ring graph ────────────────────────────────────────────── a28ea8d ──
#> ℹ undirected · named
#> ℹ 7 vertices · 5 edges
#> 
#> ── Attributes ──────────────────────────────────────────────────────────────────
#> → graph:  name <chr>, mutual <lgl>, circular <lgl>
#> → vertex: name <chr>
#> 
#> ── Edges (vertex names) ────────────────────────────────────────────────────────
#> [1] C ─ D  F ─ G  G ─ H  H ─ I  I ─ J 
V(g2)
#> ── <vertex sequence> 7/7 · named · from a28ea8d ────────────────────────────────
#> [1] C D F G H I J