reverse-methods: reverse

In Bioconductor/IRanges: Foundation of integer range manipulation in Bioconductor

reverse

Description

A generic function for reversing vector-like or list-like objects. This man page describes methods for reversing a character vector, a Views object, or a MaskCollection object. Note that reverse is similar to but not the same as rev.

Usage

reverse(x, ...)

Arguments

x	A vector-like or list-like object.
...	Additional arguments to be passed to or from methods.

Details

On a character vector or a Views object, reverse reverses each element individually, without modifying the top-level order of the elements. More precisely, each individual string of a character vector is reversed.

Value

An object of the same class and length as the original object.

See Also

• rev in base R.

• revElements in the S4Vectors package to reverse all or some of the list elements of a list-like object.

• Views objects.

• MaskCollection objects.

• reverse-methods in the XVector package.

Examples

## On a character vector:
reverse(c("Hi!", "How are you?"))
rev(c("Hi!", "How are you?"))

## On a Views object:
v <- successiveViews(Rle(c(-0.5, 12.3, 4.88), 4:2), 1:4)
v
reverse(v)
rev(v)

## On a MaskCollection object:
mask1 <- Mask(mask.width=29, start=c(11, 25, 28), width=c(5, 2, 2))
mask2 <- Mask(mask.width=29, start=c(3, 10, 27), width=c(5, 8, 1))
mask3 <- Mask(mask.width=29, start=c(7, 12), width=c(2, 4))
mymasks <- append(append(mask1, mask2), mask3)
reverse(mymasks)

Bioconductor/IRanges documentation built on Nov. 17, 2024, 6:54 p.m.