R: Make a new graph

make_ {igraph} | R Documentation

## Make a new graph

### Description

This is is generic function for creating graphs.

### Usage

    make_(...)

### Arguments

`...` | Parameters, see details below.

### Details

`make_` is a generic function for creating graphs. For every graph constructor in igraph that has a `make_` prefix, there is a corresponding function without the prefix: e.g. for `make_ring` there is also `ring`, etc.

The same is true for the random graph samplers, i.e. for each constructor with a `sample_` prefix, there is a corresponding function without that prefix.

These shorter forms can be used together with `make_`. The advantage of this form is that the user can specify constructor modifiers which work with all constructors. E.g. the `with_vertex_` modifier adds vertex attributes to the newly created graphs.

See the examples and the various constructor modifiers below.

### See Also

simplified with_edge_ with_graph_ with_vertex_ without_loops without_multiples

### Examples

    r <- make_(ring(10))
    l <- make_(lattice(c(3, 3, 3)))

    r2 <- make_(ring(10), with_vertex_(color = "red", name = LETTERS[1:10]))
    l2 <- make_(lattice(c(3, 3, 3)), with_edge_(weight = 2))

    ran <- sample_(degseq(c(3,3,3,3,3,3), method = "simple"), simplified())
    degree(ran)
    is_simple(ran)

[Package igraph version 1.2.11 Index]