Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!
Get Started for Free

bg.adjust

Background adjustment (internal function)

Description

An internal function to be used by bg.correct.rma.

Usage

bg.adjust(pm, n.pts = 2^14, ...)
bg.parameters(pm, n.pts = 2^14)

Arguments

pm

a pm matrix
n.pts

number of points to use in call to density.
...

extra arguments to pass to bg.adjust.

Details

Assumes PMs are a convolution of normal and exponential. So we observe X+Y where X is background and Y is signal. bg.adjust returns E[Y|X+Y, Y>0] as our background corrected PM. bg.parameters provides ad hoc estimates of the parameters of the normal and exponential distributions.

Value

a matrix

See Also

affy

Methods for Affymetrix Oligonucleotide Arrays

v1.68.0
LGPL (>= 2.0)
Authors
Rafael A. Irizarry <rafa@ds.harvard.edu>, Laurent Gautier <lgautier@gmail.com>, Benjamin Milo Bolstad <bmb@bmbolstad.com>, and Crispin Miller <cmiller@picr.man.ac.uk> with contributions from Magnus Astrand <Magnus.Astrand@astrazeneca.com>, Leslie M. Cope <cope@mts.jhu.edu>, Robert Gentleman, Jeff Gentry, Conrad Halling <challing@agilixcorp.com>, Wolfgang Huber, James MacDonald <jmacdon@u.washington.edu>, Benjamin I. P. Rubinstein, Christopher Workman <workman@cbs.dtu.dk>, John Zhang
Initial release

We don't support your browser anymore

Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.