madMatrix {SLmisc} | R Documentation |
Compute MAD between colums of a matrix or data.frame. Can be used to create a similarity matrix for a microarray experiment.
madMatrix(x)
x |
matrix or data.frame |
This functions computes the so called similarity matrix (based on MAD) for a microarray experiment; cf. Buness et. al. (2004).
matrix of MAD values between colums of x
Dr. Matthias Kohl (SIRS-Lab GmbH) kohl@sirs-lab.com
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
plotMAD
## only a dummy example M <- madMatrix(matrix(rnorm(1000), ncol = 10)) madPlot(M)