[R] where is a value in my list

[Grzes]

It's excellent! 
Now, if I have a vector k=c( TRUE, TRUE, FALSE) how may I get lines from
list?
which (list ?? k) ? 



David Winsemius wrote:
> 
> 
> On Nov 15, 2009, at 10:47 AM, Grzes wrote:
> 
>>
>> But it's not what I wont
>>
>> I need get a number of line my list
>> 5 is in: list[[1]][1] and list[[2]][1] so
>> I would like to get a vector k = 1,2
>>
> 
> I am sorry. I do not understand what you want the second solution  
> offered gave you numbers (and they were the numbers that were for  
> "5"'s rather than one that were not for "5"'s as your offered solution.
> 
> If you just want to know which lists contain a 5, but not the position  
> within the list (which was not what you appeared to be asking..):
> 
>  > which(sapply(lista, function(x) any(x == 5)))
> [1] 1 2
> 
> 
> 
>>
>> David Winsemius wrote:
>>>
>>>
>>> On Nov 15, 2009, at 10:01 AM, Grzes wrote:
>>>
>>>>
>>>> I heve got a list:
>>>>
>>>> lista=list()
>>>> a=c(2,4,5,5,6)
>>>> b=c(3,5,4,2)
>>>> c=c(1,1,1,8)
>>>> lista[[1]]=a
>>>> lista[[2]]=b
>>>> lista[[3]]=c
>>>>
>>>>> lista
>>>> [[1]]
>>>> [1] 2 4 5 5 6
>>>>
>>>> [[2]]
>>>> [1] 3 5 4 2
>>>>
>>>> [[3]]
>>>> [1] 1 1 1 8
>>>>
>>>> I would like to know where is number 5 (which line)?
>>>>
>>>> For example I have got a loop:
>>>>
>>>> k= vector(mode = "integer", length = 3)
>>>>
>>>> for(i in 1:3)
>>>> {
>>>> for (j in 1:length(lista[[i]])){
>>>> if ((lista[[i]][j])==5   k[i]= [i])
>>>> }
>>>> }
>>>>
>>>> This loop is wrong but I would like to get in my vector k sth like
>>>> this:
>>>>
>>>> k = lista[[1]][1], lista[[2]][1]     ...or sth similar
>>>
>>> I am a bit confused, since clearly lista[[1]][1] does _not_ == 5.  
>>> It's
>>> also unclear what type of output you expect ... character, list,
>>> numeric?
>>>
>>> See if these take you any further to your vaguely expressed goal:
>>>
>>>> lapply(lista, "%in%", 5)
>>> [[1]]
>>> [1] FALSE FALSE  TRUE  TRUE FALSE
>>>
>>> [[2]]
>>> [1] FALSE  TRUE FALSE FALSE
>>>
>>> [[3]]
>>> [1] FALSE FALSE FALSE FALSE
>>>
>>>> lapply(lista, function(x) which(x == 5) )
>>> [[1]]
>>> [1] 3 4
>>>
>>> [[2]]
>>> [1] 2
>>>
>>> [[3]]
>>> integer(0)
>>>
>>>> --
>>>
>>>
>>> David Winsemius, MD
>>> Heritage Laboratories
>>> West Hartford, CT
>>>
>>> ______________________________________________
>>> R-help at 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.
>>>
>>>
>>
>> -- 
>> View this message in context:
>> http://old.nabble.com/where-is-a-value-in-my-list-tp26359843p26360251.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help at 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.
> 
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
> 
> ______________________________________________
> R-help at 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.
> 
> 

-- 
View this message in context: http://old.nabble.com/where-is-a-value-in-my-list-tp26359843p26360930.html
Sent from the R help mailing list archive at Nabble.com.