channel               package:Biobase               R Documentation

Create a new ExpressionSet instance by selecting a specific channel

Description:

     This generic function extracts a specific element from an  object,
     returning a instance of the ExpressionSet class.

Usage:

     channel(object, name, ...)

Arguments:

  object: An S4 object, typically derived from class 'eSet'

    name: The name of the channel, a (length one) character vector.

     ...: Additional arguments.

Value:

     An instance of class 'ExpressionSet'.

Author(s):

     Biocore

Examples:

     obj <- new("NChannelSet",
                R=matrix(runif(100), 20, 5),
                G=matrix(runif(100), 20, 5))
     ## G channel as ExpressionSet
     channel(obj, "G")
       

