What you describe could be a bug (in which case providing your OS and R version info per the posting guidelines would be a minimum requirement to get it fixed) or a control character that is actually in your file (which you might need a binary editor to see). 
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John Edwards <jhnedwards603@gmail.com> wrote:

Hi, I have the following input file. $ cat main.txt CEL_A CELL_B 1 4 2 5 2 6 Then I run read.table in R. > f=read.table('main.txt', header=T, check.names=F, sep='\t') > head(f) \ufeffCEL_A CELL_B 1 1 4 2 2 5 3 2 6 > f$CEL_A NULL I'm not sure where the special character \ufeff comes from. Could anybody let me know what is the problem? Thanks, John 	[[alternative HTML version deleted]]_____________________________________________
R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. 


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