Uwe,
thank you very much - that was the solution I was looking for!
Best,
Tal
----------------Contact
Details:-------------------------------------------------------
Contact me: tal.gal...@gmail.com | 972-52-7275845
Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
www.r-statistics.com (English)
----------------------------------------------------------------------------------------------
2010/2/10 Uwe Ligges <lig...@statistik.tu-dortmund.de>
>
>
> On 10.02.2010 18:58, Tal Galili wrote:
>
>> Hi all,
>> For some reason, I would like to use functions bellow (see example code
>> bellow), but instead I get the following error message:
>> *Error in foo2(...) : unused argument(s) (arg3 = 3)*
>>
>>
>> #---------------------
>> # example code
>> #---------------------
>> foo1<- function(arg1,...)
>> {
>> print(arg1)
>> foo2(...)
>> foo3(...)
>> }
>>
>> foo2<- function(arg2)
>> {
>> print(arg2)
>> }
>>
>> foo3<- function(arg3)
>> {
>> print(arg3)
>> }
>>
>>
>> foo1(arg1 = 1, arg2 = 2, arg3 =3)
>>
>> #---------------------
>>
>>
>> I tried looking through the R Language Definition, but couldn't find
>> something that helped me understand the issue (way it should happen, and
>> what is a smart strategy to avoid it)
>>
>
> With "..." you are passing arg2 and arg3 to foo2() which only expects one
> argument.
>
> If you have rather different arguments to be passed to more than 1
> function, you may want to
>
> - either list all arguments as arguments in the calling function (here
> foo2) or
>
> - restrict by calculating on
> args <- list(...)
> before the foo2(...) call that need to be replaced by
> do.call("foo2", args)
> or
>
> - invent two arguments for foo1 such as:
>
> foo1<- function(arg1, foo2args = list(), foo3args = list())
> {
> print(arg1)
> do.call("foo2", foo2args)
> do.call("foo3", foo3args)
>
> }
>
> foo2<- function(arg2)
> {
> print(arg2)
> }
>
> foo3<- function(arg3)
> {
> print(arg3)
> }
>
> foo1(arg1 = 1, foo2args=list(arg2 = 2), foo3args=list(arg3 =3))
>
> This way it is still possible to collect various arguments to a function
> without defining all of them explicitly in the formal definition of foo1.
>
> Uwe Ligges
>
>
>
>> Any insight will be greatly appreciated.
>> Thanks,
>> Tal
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
