[R] Is it possible to generate an ExpressionSet object that contain duplicate row names?

Dear all, I am facing the problem that comes up when an ExpressionSet object is intended to be created parsing a matrix expression data with duplicate row names: > try(myExpressionSet <- new("ExpressionSet", exprs = myexprsunique, phenoData > = myphenoData, annotation = myannotation, chec

[R] Error in X11

Dear all, I've installed R-2.12.2 on a server with Suse 10 linux OS. When I try to create images I got this error: > png(filename="hola.png") Error in X11(paste("png::", filename, sep = ""), width, height, pointsize, : unable to start device PNG In addition: Warning message: In png(

[R] I cannot install Cairo package on R-2.12.2

Dear all, I have installed R-2.12.2 version on a Suse OS. I am trying to install the Cairo package on R but I got this error message: installing to /dades/R-2.12.2/lib64/R/library/Cairo/libs ** R ** preparing package for lazy loading ** help *** installing help indices ** building pac

[R] Searching for packages for normalizing Metabolomic data

Hi everybody, I am a beginner in the steps of pre-processing and data analysis of non-targeted metabolomic profiling experiments. Anyone knows if there exists some tool for normalizing this type of data (raw data or XCMS matrix data) in R repositories? Many thanks in advance. Best r