madMatrix: Compute MAD between colums of a matrix or data.frame

In MKomics: Omics Data Analysis

Description

Compute MAD between colums of a matrix or data.frame. Can be used to create a similarity matrix for a microarray experiment.

Usage

madMatrix(x)

Arguments

x	matrix or data.frame

Details

This functions computes the so called similarity matrix (based on MAD) for a microarray experiment; cf. Buness et. al. (2004).

Value

matrix of MAD values between colums of x

Note

A first version of this function appeared in package SLmisc.

Author(s)

Matthias Kohl [e-mail]

References

Andreas Buness, Wolfgang Huber, Klaus Steiner, Holger Sueltmann, and Annemarie Poustka. arrayMagic: two-colour cDNA microarray quality control and preprocessing. Bioinformatics Advance Access published on September 28, 2004. doi:10.1093/bioinformatics/bti052

See Also

plotMAD

Examples

## only a dummy example
madMatrix(matrix(rnorm(1000), ncol = 10))

MKomics documentation built on Aug. 8, 2021, 5:06 p.m.