alignExpr: Align expression data with given vector
Description
Multiplies genes (columns) in given expression data such that their correlation with given reference
vector is non-negative.
Usage
alignExpr(datExpr, y = NULL)
Arguments
datExpr
expression data to be aligned. A data frame with columns corresponding to genes and
rows to samples.
y
reference vector of length equal the number of samples (rows) in datExpr
Value
A data frame containing the aligned expression data, of the same dimensions as the input data frame.
Details
The function basically multiplies each column in datExpr by the sign of its correlation with
y. If y is not given, the first column in datExpr will be used as the reference
vector.