subsetting {limma} | R Documentation |

## Subset RGList, MAList or MArrayLM Objects

### Description

Extract a subset of an `RGList`

, `MAList`

or `MArrayLM`

object.

### Usage

object[i, j]

### Arguments

`object` |
object of class `RGList` , `MAList` or `MArrayLM` |

`i,j` |
elements to extract. `i` subsets the genes or spots while `j` subsets the arrays |

### Details

`i,j`

may take any values acceptable for the matrix components of `object`

.
See the Extract help entry for more details on subsetting matrices.

### Value

An object of the same class as `object`

holding data from the specified subset of genes and arrays.

### Author(s)

Gordon Smyth

### See Also

`Extract`

in the base package.

03.ReadingData gives an overview of data input and manipulation functions in LIMMA.

### Examples

M <- A <- matrix(11:14,4,2)
rownames(M) <- rownames(A) <- c("a","b","c","d")
colnames(M) <- colnames(A) <- c("A","B")
MA <- new("MAList",list(M=M,A=A))
MA[1:2,]
MA[1:2,2]
MA[,2]

[Package

*limma* version 2.4.7

Index]