This function returns the base line variability as a function of the
Usage
baseLineVar(x, y)
Value
Base line (or background) variability.
Arguments
x
mean expression. The corresponding corrected variance is returned.
y
object returned by compNoise, noiseBaseFit, pruneKnn or fitBackVar. Depending on the input the funtion returns either
the background variability (for pruneKnn or fitBackVar) or the base line variability.