R igraph manual pages

Select vertices and show their metadata

Description

The double bracket operator can be used on vertex sequences, to print the meta-data (vertex attributes) of the vertices in the sequence.

Usage

## S3 method for class 'igraph.vs'
x[[...]]

Arguments

x	A vertex sequence.
...	Additional arguments, passed to [.

Details

Technically, when used with vertex sequences, the double bracket operator does exactly the same as the single bracket operator, but the resulting vertex sequence is printed differently: all attributes of the vertices in the sequence are printed as well.

See [.igraph.vs for more about indexing vertex sequences.

Value

The double bracket operator returns another vertex sequence, with meta-data (attribute) printing turned on. See details below.

See Also

Other vertex and edge sequences: E, V, igraph-es-attributes, igraph-es-indexing2, igraph-es-indexing, igraph-vs-attributes, igraph-vs-indexing, print.igraph.es, print.igraph.vs

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

Examples

g <- make_ring(10) %>%
  set_vertex_attr("color", value = "red") %>%
  set_vertex_attr("name", value = LETTERS[1:10])
V(g)
V(g)[[]]
V(g)[1:5]
V(g)[[1:5]]

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