has specified data input has specified data output is specified data input of has format specification is published by is executed in GFF data visualization Ringo 2 The package Ringo facilitates the primary analysis of ChIP-chip data. The main functionalities of the package are data read-in, quality assessment, data visualisation and identification of genomic regions showing enrichment in ChIP-chip. The package has functions to deal with two-color oligonucleotide microarrays from NimbleGen used in ChIP-chip projects http://bioconductor.org/packages/2.4/bioc/html/Ringo.html Nandini Badarinarayan Graph plot BioConductor Software R software Text data set data normalization Bioconductor