channelNames {Biobase} | R Documentation

## Retrieve and set channel names from object

### Description

This generic function reports or updates the channels in an object.

### Usage

    channelNames(object, ...)
    channelNames(object, ...) <- value

### Arguments

`object` | An S4 object, typically derived from class `eSet`
`value` | Replacement value, either a character vector (to re-order existing channel names or a named character vector or list (to change channel names from the vector elements to the corresponding names).
`...` | Additional argument, not currently used.

### Details

`channelNames` returns the names of the channels in a defined order. Change the order using the replacement method with a permuation of the channel names as `value`. Rename channels using the replacement method with a named list, where the vector elements are a permutation of the current channels, with corresponding names the new identifier for the channel.

### Value

`character`.

### Author(s)

Biocore

### Examples

    ## channelNames default to alphabetical order of channels
    obj <- NChannelSet(
               R=matrix(runif(100), 20, 5),
               G=matrix(-runif(100), 20, 5))
    channelNames(obj)
    channelNames(obj) <- c(Gn="G", Rd="R")   ## rename
    channelNames(obj)
    channelNames(obj) <- c("Rd", "Gn")       ## reorder
    channelNames(obj)
    all(assayData(obj)[["Gn"]] <= 0)
    all(assayData(obj)[["Rd"]] >= 0)

[Package Biobase version 2.50.0 Index]