TreeTools (version 1.10.0)

TrivialSplits: Identify and remove trivial splits

Description

TrivialSplits() identifies trivial splits (which separate one or zero leaves from all others); WithoutTrivialSplits() removes them from a Splits object.

Usage

TrivialSplits(splits, nTip = attr(splits, "nTip"))
WithoutTrivialSplits(splits, nTip = attr(splits, "nTip"))

Value

TrivialSplits() returns a logical vector specifying whether each split in splits is trivial, i.e. includes or excludes only a single tip or no tips at all.

WithoutTrivialSplits() returns a Splits object with trivial splits removed.

Arguments

splits

An object of class Splits.

nTip

Integer specifying number of tips (leaves).

Author

Martin R. Smith ()

See Also

Other split manipulation functions: DropTip(), Subsplit()

Examples

splits <- as.Splits(PectinateTree(letters[1:9]))
efgh <- Subsplit(splits, tips = letters[5:8], keepAll = TRUE)
summary(efgh)

TrivialSplits(efgh)
summary(WithoutTrivialSplits(efgh))