[R] A way to list only variables or functions?
andy_liaw at merck.com
Mon Jun 21 16:56:11 CEST 2004
> From: Duncan Murdoch
> On Mon, 21 Jun 2004 09:53:35 -0400, "Shin, Daehyok"
> <sdhyok at email.unc.edu> wrote :
> >Glad to know useful functions.
> >How about adding lsv.str function to list only variables
> bound to values?
> >In my opinion, we are more interested in values than functions in the
> >process of data analysis.
> In R, functions often contain useful information about data (in their
> attached environments). For example, the result of a smoothing fit
> could include a function that calculates the fitted value at any
> point. So the distinction between functions and values isn't as clear
> as you seem to be thinking.
> However, it would be useful to get a slightly more informative version
> of ls(), that returned a data.frame containing the name, length,
> class, and other useful information for each object. Then if you
> didn't want to see functions, you'd just select based on the class (or
> mode, or some other column).
> I seem to recall that S-PLUS has such a function, but I forget the
> name of it. Probably R does too, on CRAN if not in the base
There are several variants of this posted to R-help and R-devel. As an
example, search for ls.obj() or ls.object().
> Duncan Murdoch
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