Xprep: Fitting of a linear model

In SAGx: Statistical Analysis of the GeneChip

Description

The function fits a linear model to a microarray data matrix.

Usage

Xprep(indata=M, formula=~as.factor(g), contrast=c(0,1), design=NULL)

Arguments

indata	The data matrix
formula	a linear model formula in the lm format
contrast	a vector defining the contrast of interest
design	the design matrix

Value

a list with the entries

Mbar	estimate of the contrast
Vest	the error variance
k	inverse of the scale factor turning Vest into a standard error
f	the degrees of freedom of Vest
design	the design matrix

Author(s)

Per Broberg

SAGx documentation built on Nov. 8, 2020, 8:18 p.m.