Re: [Rd] as.data.frame.table and the name "Freq"

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Sat 08 Jan 2005 - 20:40:30 EST

No sooner said that done.
It _is_ nice to see code with a suggested enhancement.

On Sat, 8 Jan 2005 Bill.Venables@csiro.au wrote:

> May I suggest that the method as.data.frame.table not have the name
> "Freq" hardwired as the response name? This is a problem if "Freq" is
> already the name of a stimulus factor.
>
> Here is the existing function:
>
> as.data.frame.table <- function (x, row.names = NULL, optional = FALSE,
> ...) {
> x <- as.table(x)
> data.frame(do.call("expand.grid", dimnames(x)), Freq = c(x),
> row.names = row.names)
> }
>
> My suggested fix is
>
> as.data.frame.table <-
> function (x, row.names = NULL, optional = FALSE, responseName = "Freq",
> ...) {
> x <- as.table(x)
> ex <- Quote(data.frame(do.call("expand.grid", dimnames(x)), Freq =
> c(x),
> row.names = row.names))
> names(ex)[3] <- responseName
> eval(ex)
> }
>
> This should be no slower and should break no existing code.
>
> Bill Venables,
>
> ______________________________________________
> R-devel@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

______________________________________________
R-devel@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
Received on Sat Jan 08 19:49:05 2005

This archive was generated by hypermail 2.1.8 : Sat 08 Jan 2005 - 21:17:18 EST