Hi, Apart from genefilter, is there any other packages that find all probes, probesets mappign to the same gene and then, select the one based on criterion for ex largest value of the test statistic? Look forward to your reply, Carol [[alternative HTML version deleted]]

Carol please do not cross-post to two lists (r-help, bicoonductor) as it discourages those on either list who might be able to give you an answer to do so. What you are asking for is done with one or two lines in R, e.g. using ?tapply? and a custom function implemeting your criterion. Hard to see how one could write a whole package around this that would make it easier. See also https://stat.ethz.ch/pipermail/bioconductor/2014-June/060230.html Kind regards Wolfgang Wolfgang Huber Principal Investigator, EMBL Senior Scientist Genome Biology Unit European Molecular Biology Laboratory (EMBL) Heidelberg, Germany T +49-6221-3878823 wolfgang.huber at embl.de http://www.embl.de/research/units/genome_biology/huber Il giorno Jul 25, 2014, alle ore 14:42 GMT+2, carol white <wht_crl at="" yahoo.com=""> ha scritto: > Hi, > Apart from genefilter, is there any other packages that find all probes, probesets mappign to the same gene and then, select the one based on criterion for ex largest value of the test statistic? > > Look forward to your reply, > > Carol > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor