This function generates trees with regular shapes.
stree(n, type = "star", tip.label = NULL)An object of class "phylo".
an integer giving the number of tips in the tree.
a character string specifying the type of tree to
generate; four choices are possible: "star",
"balanced", "left", "right", or any unambiguous
abbreviation of these.
a character vector giving the tip labels; if not specified, the tips "t1", "t2", ..., are given.
Emmanuel Paradis
The types of trees generated are:
``star'': a star (or comb) tree with a single internal node.
``balanced'': a fully balanced dichotomous rooted tree;
n must be a power of 2 (2, 4, 8, ...).
``left'': a fully unbalanced rooted tree where the largest clade is on the left-hand side when the tree is plotted upwards.
``right'': same than above but in the other direction.
compute.brlen, rtree
layout(matrix(1:4, 2, 2))
plot(stree(100))
plot(stree(128, "balanced"))
plot(stree(100, "left"))
plot(stree(100, "right"))
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