meffonym.bmiq.calibration: BMIQ normalization to a standard

View source: R/bmiq.r

meffonym.bmiq.calibrationR Documentation

BMIQ normalization to a standard

Description

Methylation levels are normalized so that they are comparable to a given dataset. It is based on BMIQ:

Usage

meffonym.bmiq.calibration(x, standard, ...)

Arguments

x

DNA methylation matrix (rows=CpG sites, columns=samples).

standard

A named vector of methylation levels corresponding to the row names of x.

...

See http://code.google.com/p/bmiq/ for more details.

Details

A beta-mixture quantile normalization method for correcting probe design bias in Illumina Infinium 450 k DNA methylation data. Teschendorff AE, Marabita F, Lechner M, Bartlett T, Tegner J, Gomez-Cabrero D, Beck S. Bioinformatics. 2013 Jan 15;29(2):189-96. doi: 10.1093/bioinformatics/bts680. Epub 2012 Nov 21. PMID: 23175756

The code was obtained from http://labs.genetics.ucla.edu/horvath/dnamage/NORMALIZATION.R.

Value

Matrix identical to x but with methylation levels normalized by BMIQ to the standard and rows corresponding to standard. Missing values in x are imputed by k-nearest neighbor.


perishky/meffonym documentation built on Nov. 8, 2024, 8:36 p.m.