MsCoreUtils: i2index – R documentation

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i2index

Input parameter check for subsetting operations

Description

i2index is a simple helper function to be used in subsetting functions. It checks and converts the parameter i, which can be of type integer, logical or character to integer vector that can be used as index for subsetting.

Usage

i2index(i, length = length(i), names = NULL)

Arguments

`i`	`character` `logical` or `integer` used in `[i]` for subsetting.
`length`	`integer` representing the `length` of the object to be subsetted.
`names`	`character` with the names (rownames or similar) of the object. This is only required if `i` is of type `character`.

Value

integer with the indices

Author(s)

Johannes Rainer

Examples

## With `i` being an `integer`
i2index(c(4, 1, 3), length = 10)

## With `i` being a `logical`
i2index(c(TRUE, FALSE, FALSE, TRUE, FALSE), length = 5)

## With `i` being a `character`
i2index(c("b", "a", "d"), length = 5, names = c("a", "b", "c", "d", "e"))

MsCoreUtils

Core Utils for Mass Spectrometry Data

v1.2.0

Artistic-2.0

Authors

RforMassSpectrometry Package Maintainer [cre], Laurent Gatto [aut] (<https://orcid.org/0000-0002-1520-2268>), Johannes Rainer [aut] (<https://orcid.org/0000-0002-6977-7147>), Sebastian Gibb [aut] (<https://orcid.org/0000-0001-7406-4443>), Adriaan Sticker [ctb], Sigurdur Smarason [ctb], Thomas Naake [ctb]

Initial release