Description Usage Arguments Value Examples
Downstream extraction of subtrees
1 | extract_tree(tree, depth, from = tree$root)
|
tree |
Tree object from which to extract subtree. |
depth |
Number of levels to extract from ‘tree’. |
from |
Id of node where extraction should begin. |
Returns a subtree of ‘tree’.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | library(treeFun)
d <- read.table(textConnection("\
id parents label
0 - a
1 0 b
2 0 c
3 1 d
4 1 e
5 1 f
6 2 g
7 2 h
8 7 i
"), header = TRUE, stringsAsFactors = FALSE)
## 0a
## / \
## / \
## 1b 2c
## /|\ / \
## / | \ / \
## 3d 4e 5f 6g 7h
## \
## \
## 8i
tr <- make_tree(d)
print(extract_tree(tr, 2))
print(extract_tree(tr, 2, from = "1"))
|
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