Dear List, I am trying to create an exprSet object from a tab delimited file where first column contains the gene names and remaining 14 columns contain the expression data. I am using the function read.exprSet() to read the file. However, when I look at pData(), I see that the gene name columns is listed as the sample. How can creat an exprSet object correctly? Thanks in advance. -Sohail

Hi Sohail, The package "Biobase" provides a vignette which demonstrates how to create an exprSet. You can find it here: http://www.bioconductor.org/repository/devel/vignette/Biobase.pdf HTH, Ting-Yuan ______________________________________ Ting-Yuan Liu Program in Computational Biology Division of Public Health Sciences Fred Hutchinson Cancer Research Center Seattle, WA, USA ______________________________________ We should live by the second, as each second is a critical period to pass through. ---Master Cheng Yen On Tue, 15 Nov 2005, Khan, Sohail wrote: > Dear List, > > I am trying to create an exprSet object from a tab delimited file where first column contains the gene names and remaining 14 columns contain the expression data. I am using the function read.exprSet() to read the file. However, when I look at pData(), I see that the gene name columns is listed as the sample. How can creat an exprSet object correctly? Thanks in advance. > > -Sohail > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor >

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