[R] args() function does not list function prototype for locally-produced/installed R package

[Rick Reeves]

Duncan:
  Indeed, adding the function names to the  NAMESPACE file (in the form: 
export(functionName))  solved the problem,
and the args() function displays the function argument lists.
Thanks,
Rick Reeves
On 12/5/2011 2:49 PM, Duncan Murdoch wrote:
> On 11-12-05 3:04 PM, Rick Reeves wrote:
> > Greetings:
> >
> > I have check the 'Building R Extensions' manual and can find no advice
> > on this issue,
> > so I am asking --
> >
> > I have created an R package consisting entirely of R source code, and
> > created an installer
> > using the R CMD build / R CMD check commands. The package installs
> > correctly, using
> > R CMD install, and the .Rd files for each function (one function per .R
> > / .Rd file) are visible
> > using the '?function' command. However, the 'args(function)' command
> > does not list the
> > function prototype; instead generating the error:
> >
> > Error in args(function) : object "function" not found.
> >
> > Question: If it is possible, what changes do I make to my package and
> > install process to get
> > args() to display the function prototype(s) for the functions in my
> > local package?
>
> Is the function visible (e.g., if you type the name of the function, 
> does it print)?  I would guess not:  I think you have a NAMESPACE 
> file, and you haven't listed this function in it.
>
> If you don't have a NAMESPACE file, or you do have one and you list 
> this function, then I think you need to be more forthcoming with 
> accurate information.  When I type args(function), I don't get the 
> error you get, since "function" is a reserved word:
>
> > args(function)
> Error: unexpected ')' in "args(function)"
>
> Duncan Murdoch
>
> Duncan Murdoch
>
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