qunormtrain {bapred} | R Documentation |
Quantile normalization with “documentation by value” (Kostka & Spang, 2008)
Description
Performs quantile normalization for a covariate matrix and returns the normalized dataset together with information necessary for addon quantile normalization (Kostka & Spang, 2008) using qunormaddon
.
Usage
qunormtrain(x)
Arguments
x |
matrix. The covariate matrix. observations in rows, variables in columns. |
Details
This function uses code from the off-CRAN package docval
, version 1.0.
Value
qunormtrain
returns an object of class qunormtrain
.
An object of class "qunormtrain
" is a list containing the following components:
xnorm |
matrix of quantile normalized (training) data. Observations in rows, variables in columns. |
mqnts |
Vector of length ncol(xnorm). Averages of sorted values, with averages taken across observations. |
Author(s)
Roman Hornung
References
Kostka, D., Spang, R. (2008). Microarray based diagnosis profits from better documentation of gene expression signatures. PLoS Computational Biology 4(2):e22, <doi: 10.1371/journal.pcbi.0040022>.
Examples
data(autism)
Xtrain <- X[batch==1,]
params <- qunormtrain(x=Xtrain)
Xtrainnorm <- params$xnorm