[Rd] backtick notation
tlumley at u.washington.edu
Thu Aug 7 09:48:55 MEST 2003
On Thu, 7 Aug 2003, Gabor Grothendieck wrote:
> Could someone explain the thinking behind the backtick notation in
> I think I understand that it can be used to refer to variable names
> which would otherwise not conform to R syntax; however, assign and
> as.name already allow you to do this. Is there more to it than that?
assign and as.name are fairly limited. For example, if you have a list or
data frame whose name is syntactically invalid it is quite difficult to
access or modify its columns.
Thomas Lumley Assoc. Professor, Biostatistics
tlumley at u.washington.edu University of Washington, Seattle
More information about the R-devel