maffy.subset: Select Subset

In Bioconductor/affy: Methods for Affymetrix Oligonucleotide Arrays

Select Subset

Description

Select a subset of rows with small rank-range over columns.

Usage

maffy.subset(data,subset.size=5000,maxit=100,
             subset.delta=max(round(subset.size/100),25),verbose=FALSE)

Arguments

data	a matrix
subset.size	desired size of subset
maxit	maximum number of iterations
subset.delta	maximum deviation from subset.size
verbose	logical value.

Details

Please refer to references.

Value

A list with component subset, the indexes for subset.

Author(s)

Magnus Astrand

References

Astrand, M. (2001) http://www.math.chalmers.se/~magnusaa/maffy/

See Also

maffy.normalize

Examples

if (require(affydata)) {
  #data(Dilution)
  #x <- log2(pm(Dilution)[,1:3])
  #Index <- maffy.subset(x,subset.size=100)$subset
  #mva.pairs(x[Index,])
}

Bioconductor/affy documentation built on July 21, 2023, 5:23 p.m.