the title of this thread was wrong. it's misleading sorry.
ishida
2013/3/11 ishi soichi <soichi...@gmail.com>
>
> say I have a matrix and lists like
>
> x <- matrix(c(12.1, 3.44, 0.1, 3, 12, 33.1, 1.1, 23), nrow=2)
>
> x.list <- lapply(seq_len(nrow(x)), function(i) x[i,])
>
> if I want a column of the matrix x, I write
>
> x[, 2]
>
> for example.
>
> But how can I do something similar for a set of lists, x.list, above?
>
> > x.list
> [[1]]
> [1] 12.1 0.1 12.0 1.1
>
> [[2]]
> [1] 3.44 3.00 33.10 23.00
>
> unlist(x.list)[,2] does not work.
>
>
> Anyone?
>
> ishida
>
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