R help - Dec 2011 - args() function does not list function prototype for locally-produced/installed R package

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?


Thanks,
Rick Reeves

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