meancenter {bapred}

Batch effect adjustment by mean-centering

Description

Performs batch effect adjustment by centering the variables within batches to have zero mean.

Usage

meancenter(x, batch)

Arguments

x

matrix. The covariate matrix of the new data. Observations in rows, variables in columns.

batch

factor. Batch variable. Each factor level (or 'category') corresponds to one of the batches. For example, if there are four batches, this variable would have four factor levels and observations with the same factor level would belong to the same batch.

Value

meancenter returns an object of class meancenter. An object of class "meancenter" is a list containing the following components:

xadj

matrix of adjusted (training) data

nbatches

number of batches

batch

batch variable

Author(s)

Roman Hornung

Examples

data(autism)

params <- meancenter(x=X, batch=batch)