axisPhylo {ape} | R Documentation

## Axis on Side of Phylogeny

### Description

This function adds a scaled axis on the side of a phylogeny plot.

### Usage

    axisPhylo(side = 1, root.time = NULL, backward = TRUE, ...)

### Arguments

`side` | a numeric value specifying the side where the axis is plotted: 1: below, 2: left, 3: above, 4: right.
`root.time` | the time assigned to the root node of the tree. By default, this is taken from the `root.time` element of the tree. If it is absent, this is determined from the next option.
`backward` | a logical value; if TRUE, the most distant tip from the root is considered as the origin of the time scale; if FALSE, this is the root node.
`...` | further arguments to be passed to `axis`.

### Details

The further arguments (`...`) are used to format the axis. They may be `font`, `cex`, `col`, `las`, and so on (see the help pages on `axis` and `par`).

### Author(s)

Emmanuel Paradis

### See Also

`plot.phylo`, `add.scale.bar`, `axis`, `par`

### Examples

    tr <- rtree(30)
    ch <- rcoal(30)
    plot(ch)
    axisPhylo()
    plot(tr, "c", FALSE, direction = "u")
    axisPhylo(2, las = 1)

[Package ape version 4.1 Index]