igraph (version 1.3.5)

vertex: Helper function for adding and deleting vertices

Description

This is a helper function that simplifies adding and deleting vertices to/from graphs.

Usage

vertex(...)
vertices(...)

Value

A special object that can be used with together with igraph graphs and the plus and minus operators.

Arguments

...

See details below.

Details

vertices is an alias for vertex.

When adding vertices via +, all unnamed arguments are interpreted as vertex names of the new vertices. Named arguments are interpreted as vertex attributes for the new vertices.

When deleting vertices via -, all arguments of vertex (or vertices) are concatenated via c() and passed to delete_vertices.

See Also

Other functions for manipulating graph structure: +.igraph(), add_edges(), add_vertices(), delete_edges(), delete_vertices(), edge(), igraph-minus, path()

Examples

g <- make_(ring(10), with_vertex_(name = LETTERS[1:10])) +
  vertices('X', 'Y')
g
plot(g)