unbranch trees
unbranch trees and merges the subtree to the parent node.
unbranch(dend, ...) ## Default S3 method: unbranch(dend, ...) ## S3 method for class 'dendrogram' unbranch(dend, branch_becoming_root = 1, new_root_height, ...) ## S3 method for class 'hclust' unbranch(dend, branch_becoming_root = 1, new_root_height, ...) ## S3 method for class 'phylo' unbranch(dend, ...)
dend |
a dendrogram (or hclust) object |
... |
passed on |
branch_becoming_root |
a numeric choosing the branch of the root which will become the new root (from left to right) |
new_root_height |
the new height of the branch which will become the new root. If the parameter is not given - the height of the original root is used. |
An unbranched dendrogram
unroot ape
hc <- hclust(dist(USArrests[2:9, ]), "com") dend <- as.dendrogram(hc) par(mfrow = c(1, 3)) plot(dend, main = "original tree") plot(unbranch(dend, 1), main = "unbranched tree (left branch)") plot(unbranch(dend, 2), main = "tree without (right branch)")
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