On Wed, Jul 11, 2012 at 9:56 PM, William Dunlap <wdun...@tibco.com> wrote: > Why does one want to replace a zero-row data.frame > with a one-row data.frame of NA's? Unless this is for > an external program that cannot handle zero-row inputs, > this suggests that there is an unnecessary limitation (i.e., > a bug) in the R code that uses this data.frame. > I'm running an apply(df, 1, f) function, where f() matches a df$string in another matrix and fetches data associated with this string. When no match is made I do not need a zero-row data frame, but to preserve the structure of the original df I need a data frame with 1 row of NAs. There may be a nicer approach, but I'm not aware of any.
Regards Liviu ______________________________________________ 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.
