MKmisc (version 1.9)

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

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)

Value

matrix of MAD values between colums of x

Arguments

x

matrix or data.frame

Author

Matthias Kohl

Details

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

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))