genArise (version 1.48.0)

filter.spot: Intensity-based filtering of array elements

Description

This function keep only array elements with intensities that are 2 standard deviation above background.

Usage

filter.spot(mySpot)

Arguments

mySpot

Spot object for one microarray.

Value

Array elements with intensities that are 2 standard deviation above background.

References

John Quackenbush "Microarray data normalization and transformation". Nature Genetics. Vol.32 supplement pp496-501 (2002)

Examples

data(Simon)
## background correction and save it in c.spot
c.spot <- bg.correct(Simon)
## normalize spot
n.spot <- grid.norm(c.spot, nr = 23, nc = 24)
## filtering the spot
filter.spot(n.spot)