microarrayScale: Scaling of expression values

In oncoclass/hemaClass: One-by-one normalization and classification of hematological malignacies

Description

Scale expression values prior to use of classification algorithms.

Usage

microarrayScale(x, center = "median", scale = "sd")

Arguments

x	matrix containing expression values. May also be of class ExpressionSet.
center	How should the data be centered. Can be either "median", "mean", or "FALSE".
scale	How should the data be scaled. Can be either "sd" or "FALSE".

Details

First each probe-set is median centred. Next, each probe-set is scaled to have unit-variance.

Value

Expression matrix consisting of genewise median centred and scaled genes.

Author(s)

Steffen Falgreen <sfl (at) rn.dk>
Anders Ellern Bilgrau <abilgrau (at) math.aau.dk>

References

Reference to the hemaClass.com paper

Examples

2+2

oncoclass/hemaClass documentation built on May 24, 2019, 2:19 p.m.