countLeaf {TreeSummarizedExperiment} | R Documentation

## count the number of leaf nodes

### Description

`countLeaf` calculates the number of leaves on a `phylo` tree.

### Usage

    countLeaf(tree)

### Arguments

`tree` | A phylo object

### Value

a numeric value

### Author(s)

Ruizhu Huang

### Examples

    library(ggtree)

    data(tinyTree)

    ggtree(tinyTree, branch.length = 'none') +
    geom_text2(aes(label = label), hjust = -0.3) +
    geom_text2(aes(label = node), vjust = -0.8,
    hjust = -0.3, color = 'blue')

    (n <- countLeaf(tinyTree))

[Package TreeSummarizedExperiment version 2.2.0 Index]