Use this if you are using igraph from R

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

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

`x` |
A vertex sequence. |

`...` |
Additional arguments, passed to |

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.

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

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()`

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]]

[Package *igraph* version 1.2.6 Index]