igraph-vs-indexing2: Select vertices and show their metadata

Description Usage Arguments Details Value See Also Examples

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

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## 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

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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]]

Example output

Attaching package: 'igraph'

The following objects are masked from 'package:stats':

    decompose, spectrum

The following object is masked from 'package:base':

    union

+ 10/10 vertices, named:
 [1] A B C D E F G H I J
+ 10/10 vertices, named:
   color name
1    red    A
2    red    B
3    red    C
4    red    D
5    red    E
6    red    F
7    red    G
8    red    H
9    red    I
10   red    J
+ 5/10 vertices, named:
[1] A B C D E
+ 5/10 vertices, named:
  color name
1   red    A
2   red    B
3   red    C
4   red    D
5   red    E

igraph documentation built on March 19, 2020, 5:13 p.m.