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
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@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>
>
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