1. Not reproducible, hence impossible to say. 2. This is r-help. RStudio is totally separate and its own support page.
3. A guess: Use are sourcing the entire script in the editor panel into R, and there is something screwed up there. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Sat, Mar 11, 2017 at 10:50 AM, lily li <chocol...@gmail.com> wrote: > Hi R users, > > I have a problem about using R studio. For example, there is a dataframe > that has many columns. I want to aggregated column X and column Y into > column Z. Column Z does not exist before the aggregation. I use the code > below: > df$Z = df$X + df$Y > > However, it does not work in the top left panel in Rstudio, and has the > following warning message: > Error in `$<-.data.frame`(`*tmp*`, "Z", value = numeric(0)) : > replacement has 0 rows, data has 34333 > > If I type the same code in the Console panel (bottom left panel), it works. > How to deal with this problem? Thanks. > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.
