# findSibling: find the sibling node In TreeSummarizedExperiment: TreeSummarizedExperiment: a S4 Class for Data with Tree Structures

## Description

`findSibling` is to find the sibling node of an `node` node.

## Usage

 `1` ```findSibling(tree, node, use.alias = FALSE) ```

## Arguments

 `tree` A phylo object. `node` A numeric or character vector. Node labels or node numbers. `use.alias` A logical value, TRUE or FALSE. The default is FALSE, and the original 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`.

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11``` ```library(ggtree) data(tinyTree) ggtree(tinyTree, branch.length = 'none') + geom_text2(aes(label = label), color = "darkorange", hjust = -0.1, vjust = -0.7) + geom_text2(aes(label = node), color = "darkblue", hjust = -0.5, vjust = 0.7) findSibling(tree = tinyTree, node = 17) findSibling(tree = tinyTree, node = c(13, 17)) ```

TreeSummarizedExperiment documentation built on Dec. 8, 2020, 2 a.m.