On Mon, 21 Jan 2008, Moshe Olshansky wrote: > Thanks to all those who responded! > > Now the obvious thing (putting the column name into > double quotes) works for me too. But it didn't work > yesterday! I have no explanation for this.
I would have thought 'the obvious thing' for $ was x$`CPI/RPI` which is how R prints non-syntactic names of lists. See ?Quotes > > Moshe. > > --- Moshe Olshansky <[EMAIL PROTECTED]> wrote: > >> Hi everyone, >> >> I am sure that this question has been asked here >> some >> time ago but I do not remember the answer and was >> unable to find it in the archives... >> >> Below is my question: suppose that I have a >> data.frame >> x and one of it's columns name is "CPI/RPI" (without >> quotation marks of course). How can I reference this >> column? Neither of x$CPI/RPI or x$"CPI/RPI" work. I >> certainly can do x[,which(colnames(x) == "CPI/RPI")] >> but there should be a nicer way to do this. >> >> Thank you! >> >> Moshe Olshansky. >> >> ______________________________________________ >> 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. >> > > ______________________________________________ > 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. > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ 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.
