Hi Borja, You may issue:
attach(data) which results in adding your column names to the search path of R for name resolving. Pierrick Bruneau CRP Gabriel Lippmann On Wed, Mar 20, 2013 at 11:17 PM, Borja . <borjalato...@outlook.com> wrote: > Good day. > I create a data frame like this: > > data <- data.frame(a=1:10,b=11:20,c=21:30) > I can subset this data.frame by saying: > > data[data$a>7,] > and I get this result > a b c 8 8 18 28 > 9 9 19 29 10 10 20 30 > I understand I should get the same result by saying > > data[a>7,0] > but I don't. Instead I get: > Error in `[.data.frame`(data, a > 7, 0) : object 'a' not > found > Thank you very much in advance > [[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. > [[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.
