unwrap.array.RdUnwrap an array, matrix or a vector to an array of more dimensions. This is done by splitting up each dimension into several dimension based on the names of that dimension.
A list or a character vector.
If a list, it should contain functions that takes a character
vector as the first argument and optional ... arguments.
Each function should split the vector into a list of same length
and where all elements contains the same number of parts.
If a character vector, each element split[i] is replaced by
a function call
function(names, ...) strsplit(names, split=split[i]).
If TRUE, dimensions of of length one are dropped, otherwise not.
Arguments passed to the split functions.
Returns an array.
Although not tested thoroughly, unwrap() should be the inverse
of wrap() such that identical(unwrap(wrap(x)), x) holds.
*wrap().