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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