Example intensities from Tiling Microarray nucleosome positioning experiment

Description

Some bases from S.cerevisiae tiling microarray where mononucleosomes were sequenced and hybridizated with histone-free naked DNA. The intensity is the normalized ratio between the intensities from nucleosomic and naked DNA.

Due to the difficulty of providing a raw file, this file has been preprocessed. See details.

Usage

data(nucleosome_tiling)

Format

numeric vector with the intensities.

Details

The raw .CEL files from Affymetrix S.Cerevisiae Tilling 1.0R Array (3 nucleosomal + 3 naked DNA) has been merged using package Starr and the resulting ExpressionSet object has been passed to processTilingArray function from this package as follows:

processTilingArray(data, exprName, chrPAttern="Sc:Oct_2003;chr1", closeGaps=50)

The first 8000bp of the chr1 have been saved as this example dataset.

Source

Publication pending

Results