[R] Putting all elementes of the list in an enviorment of a function

[Prof Brian Ripley]

On Tue, 2 Aug 2005, Ales Ziberna wrote:

> Thank you!
>
> However, this does not do exacty what I want. I would like somehow to modify 
> only the function second.

What happened when you tried my suggestion as

second <- function(l, c) with(l, a + b + c)

?  It does work for me.

> BTW, I used "list" only to create a "list", it is not one of my functions.

You used it as a variable within second()!


> Thanks again,
> Ales Ziberna
>
> ----- Original Message ----- From: "Prof Brian Ripley" 
> <ripley at stats.ox.ac.uk>
> To: "Ales Ziberna" <ales.ziberna at guest.arnes.si>
> Cc: "R-help" <r-help at stat.math.ethz.ch>
> Sent: Tuesday, August 02, 2005 10:35 AM
> Subject: Re: [R] Putting all elementes of the list in an enviorment of a 
> function
>
>
>> ?with will help you.
>> 
>> I would avoid using 'list' as a function name, as it will confuse people
>> and might confuse R too.
>> 
>> On Tue, 2 Aug 2005, [iso-8859-2] Alea }iberna wrote:
>> 
>>> Hello!
>>> 
>>> I have two functions.
>>> 
>>> The first one prepares the arguments for the second one. What is the best
>>> way to put all resoults of the first one into the second one? I tried
>>> attach, however the object in the "main" enviorment have a priority over 
>>> the
>>> ones in list. An example is at the end.
>>> 
>>> Thanks in advance for any suggestions!
>>> Ales Ziberna
>>> 
>>> For example - I would like to use just "a" instead of "list$a" in fuction
>>> "second"
>>> 
>>> first<-function(a,b){
>>>    if(length(a)!=1) a <- a[1]
>>>    if(length(b)!=1) b <- b[1]
>>>    list(a=a,b=b)
>>> }
>>> 
>>> second<-function(list,c){
>>>    list$a + list$b + c
>>> }
>>> 
>>> a<-c(2,3)
>>> b<-4:64
>>> c<-5
>>> 
>>> res<-first(a,b)
>>> second(res,c)
>> 
>> -- 
>> Brian D. Ripley,                  ripley at 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
>> 
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>
>

-- 
Brian D. Ripley,                  ripley at 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