toNewick {symmoments} | R Documentation |
convert representation of phylogenetic tree as a moment L-matrix to Newick form
Description
function converts a tree in moment format to Newick format.
The input can be an L-matrix
object,
a square $L$ matrix,
or an $L$ matrix in reduced upper-triangular (vector) form.
The toNewick
function sets its list output to class L-Newick
,
which has $5$ components,
including the tree in Newick format.
Usage
toNewick(L, type = NULL, tip.label = NULL)
Arguments
L |
L can be an |
type |
if L is not a |
tip.label |
Character vector containing labels for tips. If null, labels default to "a"-"z" it at most 26; otherwise, 3-letter labels of the form "aaa", "aab",... |
Details
An L-matrix
object is a list with 5 components: "L" is the L-matrix in square form. "L.ut" is the L-matrix in upper-triangular form. "Newick" is the Newick representation of the tree.
"tip.label" is the character vector of tip labels. "tip.label.n" is the number of tips.
Value
a Newick representation of the phylogenetic tree corresponding to the input
Author(s)
Kem Phillips <kemphillips@comcast.net>
References
K Phillips, Symbolic Computation of the Central Moments of the Multivariate Normal Distribution, Journal of Statistical Software, 2010.
J. Felsenstein, The Newick tree format, 1990, http://evolution.genetics.washington.edu/phylip/newicktree.html
P.W. Diaconis and S. Holmes, Matchings and Phylogenetic Trees, Proc. Natl. Acad. Sci., 1998, 95(25), 14600-14602
See Also
functions toMoment and toMatching
Examples
# create a Newick object
exam.Newick <- "(((a,b),c),d);"
# convert to a moment L-matrix
exam.moment <- toMoment(exam.Newick)
# convert back to Newick format
backto.Newick <- toNewick(exam.moment)