Hi I used to create an object by this command : martMm <- useMart(biomart = "ensembl", dataset="hsapiens_gene_ensembl") But now it dosen't work anymore and i get this error message : unable to open connection unable to resolve 'web50-node4.ebi.ac.uk' Could you explain why it doesn't work ? Thanks -- MOUROT Tabar? Stagiaire Master Pro BioInfo Plateforme transcriptome Institut de G?nomique Fonctionnelle 141, rue de la Cardonille 34094 Montpellier Cedex 5 Tel : +33 (0)4 67 14 29 64 E-mail : tabare.mourot at igf.cnrs.fr -- Passerelle antivirus IGF --

TM wrote: > Hi > I used to create an object by this command : > martMm <- useMart(biomart = "ensembl", dataset="hsapiens_gene_ensembl") > But now it dosen't work anymore and i get this error message : > unable to open connection > unable to resolve 'web50-node4.ebi.ac.uk' > Could you explain why it doesn't work ? A quick search of the BioC list would have shown you several emails in the past few days that are related to this problem. The short answer is that the BioMart webserver is having problems that they are trying to correct. In the meantime you can always connect using the RMySQL interface. Best, Jim > Thanks > > > > -- James W. MacDonald, M.S. Biostatistician Affymetrix and cDNA Microarray Core University of Michigan Cancer Center 1500 E. Medical Center Drive 7410 CCGC Ann Arbor MI 48109 734-647-5623 ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues.