R: Create an undirected tree graph from its Prufer sequence

make_from_prufer {igraph} | R Documentation

## Create an undirected tree graph from its Prufer sequence

### Description

`make_from_prufer` creates an undirected tree graph from its Prufer sequence.

### Usage

    make_from_prufer(prufer)

    from_prufer(...)

### Arguments

`prufer` | The Prufer sequence to convert into a graph
`...` | Passed to `make_from_prufer`

### Details

The Prufer sequence of a tree graph with n labeled vertices is a sequence of n-2 numbers, constructed as follows. If the graph has more than two vertices, find a vertex with degree one, remove it from the tree and add the label of the vertex that it was connected to to the sequence. Repeat until there are only two vertices in the remaining graph.

### Value

A graph object.

### See Also

`to_prufer` to convert a graph into its Prufer sequence

### Examples

    g <- make_tree(13, 3)
    to_prufer(g)

[Package igraph version 1.3.1 Index]