Manta <mantino84 <at> libero.it> writes: > > Dear R users, > > I may have found a bug in the function 'data.table'. I have a similar > question as the one in this post: > > http://stackoverflow.com/questions/3367190/ aggregate-and-weighted-mean-in-r >
[snip] > While I run the command > > temp[,list(weighted.mean(TIME3,QTY)),by=DATE2] > > R crashes. This behavior occurs in both R Studio and R GUI, regardless of > the version (2.14, 2.15, 3.0). Is it really a bug or am I doing something > wrong? > If by "crash" you mean that the program actually terminates (i.e. not just an error), then this is by definition a bug in data.table -- there is a bug tracker at https://r-forge.r-project.org/tracker/?group_id=240 , or you could try contacting the package maintainer (help(package="data.table") or maintainer("data.table") ______________________________________________ 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.