no0br: No negative or zero branch length

In jingwyang/TreeExp: the R package for analyzing expression evolution based on RNA-seq data

Description

This function does a small tweak on the tree to replace negative-length branch with zero-length and/or assign zero-length branch between root and MRCA of the ingroup a small value

Usage

no0br(phy, remove.0length = TRUE, root.length = FALSE)

Arguments

phy	an tree of 'phylo' class
remove.0length	a logical specifying whether to replace negtative branch length with 0 (TRUE by default)
root.length	a logical specifying whether to assign a small value to the branch between root and MRCA of the ingroup (FALSE by default). If TRUE, the tree should be rooted first

Value

returns the tree without zero-length or negative-length branch

jingwyang/TreeExp documentation built on June 11, 2019, 6:17 p.m.