Hi All, I hadn't realized the 'a-1' will open such a can of worms! Actually, the header elements will look something like 'ABCD-002-234-01D' (instead of 'a-1'). I get the files from somwhere else, so I cannot change how the input file is. Should I go ahead with the check.names=FALSE option?
________________________________ From: Erik Iverson <er...@ccbr.umn.edu> Cc: r-h...@stat.math.ethz.ch Sent: Wed, February 3, 2010 4:27:11 PM Subject: Re: [R] Header in read.table() function >If you're data.frame had a > column named 'a', what should > >> mm$a-1 > > do? Print out mm$a-1, or subtract 1 from mm$a ? If you want your > original matrix back (i.e., object of class matrix), you could just use > save/load functions. David found a way to get this in. I read the file in, converted to numeric. mm$a-1 subtracts 1 from a, and using mm$`a-1` prints out the a-1 column... I stand corrected, and agree that it is probably not worth the trouble. [[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.