[R] lapply where each list object has multiple parts

Henrique Dallazuanna wwwhsd at gmail.com
Thu Oct 2 13:26:24 CEST 2008


Try this:

rapply(BigList, mean)[c(1, 3)]


On Wed, Oct 1, 2008 at 6:29 PM, eric lee <ericlee100 at gmail.com> wrote:
> Hi.  I have a list where each object in the list has multiple parts.  I'd
> like to take the mean of just one part of each object.  Is it possible to do
> this with lapply?  If not, can you recommend another function?  Thanks.
>
> eric
>
>> x1 <- c(0,1,2,3)
>> x2 <- c(7,8)
>> x3 <- c(2,6,6,8)
>> x4 <- c(4,8)
>>
>> Lst1 <- list(label1 = x1,label2 = x2)
>> Lst2 <- list(label1 = x3, label2 = x4)
>>
>> BigList <- list(Lst1, Lst2)
>>
>> lapply(BigList$label1, mean)
> list()
>>
>
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>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O



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