findOS {TreeSummarizedExperiment} | R Documentation

## Find descendants (or offsprings)

### Description

`findDescendant` finds descendants of a node.

### Usage

    findOS(tree, node, only.leaf = TRUE, self.include = FALSE, use.alias = FALSE)

    findDescendant(
      tree,
      node,
      only.leaf = TRUE,
      self.include = FALSE,
      use.alias = FALSE
    )

### Arguments

`tree` | A phylo object.
`node` | An internal node. It could be the node number or the node label.
`only.leaf` | A logical value, TRUE or FALSE. The default is TRUE. If default, only the leaf nodes in the descendant nodes would be returned.
`self.include` | A logical value, TRUE or FALSE. The default is FALSE. If TRUE, the node specified in node is included and the leaf node itself is returned as its descendant.
`use.alias` | A logical value, TRUE or FALSE. The default is FALSE, and the node label would be used to name the output; otherwise, the alias of node label would be used to name the output. The alias of node label is created by adding a prefix `"alias_"` to the node number.

### Value

A vector of nodes. The numeric value is the node number, and the vector name is the corresponding node label. If a node has no label, it would have NA as name when `use.alias = FALSE`, and have the alias of node label as name when `use.alias = TRUE`.

### Author(s)

Ruizhu Huang

### Examples

    data(tinyTree)

    library(ggtree)
    ggtree(tinyTree) +
    geom_text2(aes(label = node), color = "darkblue",
                   hjust = -0.5, vjust = 0.7) +
    geom_hilight(node = 17, fill = 'steelblue', alpha = 0.5) +
    geom_text2(aes(label = label), color = "darkorange",
               hjust = -0.1, vjust = -0.7)

    (tips <- findDescendant(tree = tinyTree, node = c(17), only.leaf = TRUE))

[Package TreeSummarizedExperiment version 2.2.0 Index]