droplevels: Drop unused levels from factors

Description Usage Arguments Value Note Examples

Description

The function droplevels is used to drop unused levels from a factor or, more commonly, from factors in a data frame.

Usage

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## S4 method for signature 'Ranges'
droplevels(x)

## S4 method for signature 'SummarizedExperiment'
droplevels(x)

Arguments

x

Object.

Value

Modified object.

Note

Updated 2019-08-19.

Examples

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data(RangedSummarizedExperiment, package = "acidtest")

## Ranges ====
rse <- RangedSummarizedExperiment
object <- SummarizedExperiment::rowRanges(rse)
droplevels(object)

## SummarizedExperiment ====
object <- RangedSummarizedExperiment

steinbaugh/S4Transformer documentation built on Jan. 9, 2020, 7:30 p.m.