alignExpr {WGCNA}

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

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.

Value

A data frame containing the aligned expression data, of the same dimensions as the input data frame.

Author(s)

Steve Horvath and Peter Langfelder