R: Ladderize a Tree

ladderize {dendextend} | R Documentation

## Ladderize a Tree

### Description

This function reorganizes the internal structure of the tree to get the ladderized effect when plotted.

### Usage

    ladderize(x, right = TRUE, ...)

    ## S3 method for class 'dendrogram'
    ladderize(x, right = TRUE, ...)

    ## S3 method for class 'phylo'
    ladderize(x, right = TRUE, phy, ...)

    ## S3 method for class 'dendlist'
    ladderize(x, right = TRUE, which, ...)

### Arguments

`x` | a tree object (either a dendrogram, dendlist, or phylo)
`right` | a logical (TRUE) specifying whether the smallest clade is on the right-hand side (when the tree is plotted upwards), or the opposite (if FALSE).
`...` | Currently ignored.
`phy` | a placeholder in case the user uses "phy ="
`which` | an integer (can have any number of elements). It indicates the elements in the dendlist to ladderize. If missing, it will ladderize all the dendrograms in the dendlist.

### Value

A rotated tree object

### See Also

`ladderize`, `rev.dendrogram`, `rotate` (dendextend), `rotate` (ape)

### Examples

    dend <- USArrests[1:8,] %>% dist %>% hclust %>% as.dendrogram %>%
       set("labels_colors") %>% set("branches_k_color", k = 5)
    set.seed(123)
    dend <- shuffle(dend)

    par(mfrow = c(1,3))
    dend %>% plot(main = "Original")
    dend %>% ladderize(TRUE) %>% plot(main = "Right (default)")
    dend %>% ladderize(FALSE) %>% plot(main = "Left (rev of right)")

[Package dendextend version 1.8.0 Index]