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coreset
2012 Dec 12
2
using 'apply' to apply princomp to an array of datasets
Hi everyone,
Suppose I have a 3D array of datasets, where say dimension 1 corresponds to
cases, dimension 2 to datasets, and dimension 3 to observations within a
dataset. As an example, suppose I do the following:
> x <- sample(1:20, 48, replace=TRUE)
> datasets <- array(x, dim=c(4,3,2))
Here, for each j=1,2,3, I'd like to think of datasets[,j,] as a single data
matrix with