spkTools (version 1.28.0)

spkBox: Fold Change Calculations

Description

A function to calculate the log-ratios stratified by which ALE groups yield the comparison. They are stratified by which bins are being compared to produce the given fold change.

Usage

spkBox(object, spkSlopeOut, fc = 2, tol = 3, reduce=TRUE)

Arguments

object

a SpikeInExpressionSet object

spkSlopeOut

the output of the spkSlope function

fc

the fold change of interest

tol

the precision (number of digits after decimal point) in fc

reduce

if TRUE the number of points plotted in the null bins is reduced

Value

A list with the log-ratios separated by ALE strata comparison.

Details

This function requires the output of spkSlope.

Examples

data(affy)
affySlope <- spkSlope(affy)
spkBox(affy,affySlope)