| subsetting {limma} | R Documentation |
Return an RGList, MAList, EListRaw, EList or MArrayLM object with only selected rows and columns of the original object.
## S3 method for class 'RGList' object[i, j] subsetListOfArrays(object, i, j, IJ, IX, I, JX)
object |
object of class |
i,j |
elements to extract. |
IJ |
character vector giving names of components that should be subsetted by |
IX |
character vector giving names of 2-dimensional components that should be subsetted by |
I |
character vector giving names of vector components that should be subsetted by |
JX |
character vector giving names of 2-dimensional components whose row dimension corresponds to |
i,j may take any values acceptable for the matrix components of object.
Either or both can be missing.
See the Extract help entry for more details on subsetting matrices.
object[] will return the whole object unchanged.
A single index object[i] will be taken to subset rows, so object[i] and object[i,] are equivalent.
subsetListOfArrays is used internally as a utility function by the subsetting operations.
It is not intended to be called directly by users.
Values must be supplied for all arguments other than i and j.
An object the same as object but containing data from the specified subset of rows and columns only.
Gordon Smyth
Extract in the base package.
02.Classes for a summary of the different data classes.
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[c("a","b"),]
MA[1:2,2]
MA[,2]