R: Select vertices and show their metadata

igraph-vs-indexing2 {igraph} | R Documentation

## 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]]

[Package igraph version 1.3.1 Index]