length(result) == 0 > result <- integer(0) > result integer(0) > length(result) == 0 [1] TRUE >
On Tue, Nov 9, 2010 at 9:55 PM, vioravis <viora...@gmail.com> wrote: > > I am trying to use which function to obtain the index of a value in a > dataframe. Depending on whether the value is present in the dataframe or not > I am performing further operations to the dataframe. > > However, if the value is not present in the dataframe, I am getting an > integer(0). > > How do I check for integer(0)? something like is.na??? > > Thank you. > > Ravishankar > > > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Which-value-not-present-tp3035455p3035455.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.