which: Which is the first/last TRUE value.

which.firstR Documentation

Which is the first/last TRUE value.

Description

Determines the location, i.e., index of the first or last TRUE value in a logical vector.

Usage

which.first(x)

which.last(x)

Arguments

x

logical, vector.

Value

integer, index of the first/last TRUE value. integer(0) if no TRUE (everything FALSE or NA) was found.

Author(s)

Sebastian Gibb

See Also

which.min()

Other helper functions for developers: between(), isPeaksMatrix(), rbindFill(), validPeaksMatrix(), vapply1c()

Examples

l <- 2 <= 1:3
which.first(l)
which.last(l)

rformassspectrometry/MsCoreUtils documentation built on Oct. 24, 2024, 1:52 p.m.