See also the recent: @ARTICLE{ArteagaSalasJ_etal_2008, author = {Jose M Arteaga-Salas and Harry Zuzan and William B Langdon and Graham J G Upton and Andrew P Harrison}, title = {An overview of image-processing methods for Affymetrix GeneChips.}, journal = {Brief Bioinform}, year = {2008}, volume = {9}, pages = {25--33}, number = {1}, month = {Jan}, abstract = {We present an overview of image-processing methods for Affymetrix GeneChips. All GeneChips are affected to some extent by spatially coherent defects and image processing has a number of potential impacts on the downstream analysis of GeneChip data. Fortunately, there are now a number of robust and accurate algorithms, which identify the most disabling defects. One group of algorithms concentrate on the transformation from the original hybridisation DAT image to the representative CEL file. Another set uses dedicated pattern recognition routines to detect different types of hybridisation defect in replicates. A third type exploits the information provided by public repositories of GeneChips (such as GEO). The use of these algorithms improves the sensitivity of GeneChips, and should be a prerequisite for studies in which there are only few probes per relevant biological signal, such as exon arrays and SNP chips.}, doi = {10.1093/bib/bbm055}, pii = {bbm055}, pmid = {18057073}, timestamp = {2008.01.15}, url = {http://dx.doi.org/10.1093/bib/bbm055} } /Henrik On 15/01/2008, Kevin R. Coombes <krcoombes at="" mdacc.tmc.edu=""> wrote: > If you go to our course web site: > http://bioinformatics.mdanderson.org/MicroarrayCourse/Lectures07/ > and check out Lecture 1, there is a description of how DAT files are > turned into CEL files. > Kevin > > BURCIN BEKTAS wrote: > > > > Greetings, > > > > Does anybody know how affymetrix GCOS converts DAT files to CEL files? > > Gridding, feature extraction (with coefficient of variance update) etc. > > is being done but are there any reference documents that fully explain > > this procedure or is this a closed information? > > > > Thanks > > > > > > Dikkat: Bu elektronik posta mesaji kisisel ve ozeldir. Eger size gonderilmediyse lutfen gondericiyi bilgilendirip mesaji siliniz.Firmamiza gelen ve giden mesajlar virus taramasindan gecirilmekte, guvenlik nedeni ile kontrol edilerek saklanmaktadir.Mesajdaki gorusler gondericiye ait olup HAVELSAN A.S. resmi gorusu olmak zorunda degildir. > > > > Attention: This e-mail message is private and privileged.If you are not the recipient for whom this e-mail message is intended, please notify the sender immediately and delete this e-mail message from your system.All sent and received e-mail messages go through a virus scan in our company, and because of security reasons, they are stored after being controlled.Any opinions presented in this e-mail message are solely those of the author and do not necessarily represent HAVELSAN A.S.`s formal and authorized views. > > > > [[alternative HTML version deleted]] > > > > _______________________________________________ > > Bioconductor mailing list > > Bioconductor at stat.math.ethz.ch > > https://stat.ethz.ch/mailman/listinfo/bioconductor > > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor >