droplevels: Drop unused levels from factors

In steinbaugh/S4Transformer: Coercion methods for biological data

Description

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

Usage

## 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

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.