search for: sagacity

...t; Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote: >> >> x["V2"] >> >> is more efficient than using drop=FALSE, and perfectly normal syntax >> (data frames are lists of columns). > > <SNIP> > > I never cease to be amazed by the sagacity and perspicacity of the > designers of R. I would have worried that x["V2"] would turn out to be > a *list* (of length 1), but no, it retains the data.frame class, which > is clearly the Right Thing To Do. > > cheers, > > Rolf > > -- > Honorary Research...

Apologies for the off-topic question; as usual I'm trying to draw upon the unparalleled knowledge and sagacity of the r-help list. Please reply off-list if you can help me out. A collaborator of mine found a formula we need, on sheets which he had photocopied out of a book, some years ago. He cannot remember which book (he's getting to be as senile and forgetful as I am, poor bloke!). He thinks it wa...

x["V2"] is more efficient than using drop=FALSE, and perfectly normal syntax (data frames are lists of columns). I would ignore the naysayers, or put a comment in if you want to accelerate their uptake. As I understand it, one of the main reasons tibbles exist is because of drop=TRUE. List-slice (single-dimension) indexing works equally well with both standard and tibble types of data