RandomTree(), PectinateTree(), BalancedTree() and StarTree()
generate trees with the specified shapes and leaf labels.
RandomTree(tips, root = FALSE, nodes)YuleTree(tips, addInTurn = FALSE, root = TRUE)
PectinateTree(tips)
BalancedTree(tips)
StarTree(tips)
Each function returns an unweighted binary tree of class phylo with
the specified leaf labels. Trees are rooted unless root = FALSE.
RandomTree() returns a topology drawn at random from the uniform
distribution (i.e. each binary tree is drawn with equal probability).
Trees are generated by inserting
each tip in term at a randomly selected edge in the tree.
Random numbers are generated using a Mersenne Twister.
If root = FALSE, the tree will be unrooted, with the first tip in a
basal position. Otherwise, the tree will be rooted on root.
YuleTree() returns a topology generated by the Yule process
Steel2001TreeTools,
i.e. adding leaves in turn adjacent to a randomly-chosen existing leaf.
PectinateTree() returns a pectinate (caterpillar) tree.
BalancedTree() returns a balanced (symmetrical) tree, in preorder.
StarTree() returns a completely unresolved (star) tree.
An integer specifying the number of tips, or a character vector
naming the tips, or any other object from which TipLabels() can
extract leaf labels.
Character or integer specifying tip to use as root;
or TRUE to root the tree on a random edge;
or FALSE to return an unrooted tree.
Number of nodes to generate. The default and maximum,
tips - 1, generates a binary tree; setting a lower value will induce
polytomies.
Logical specifying whether to add leaves in the order of
tips. If FALSE, leaves will be added in a random order.
()
Other tree generation functions:
ConstrainedNJ(),
NJTree(),
TreeNumber,
TrivialTree
RandomTree(LETTERS[1:10])
data("Lobo")
RandomTree(Lobo.phy)
YuleTree(LETTERS[1:10])
plot(PectinateTree(LETTERS[1:10]))
plot(BalancedTree(LETTERS[1:10]))
plot(StarTree(LETTERS[1:10]))
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