shuffleobs

			shuffleobs([rng], data)

Return a "subset" of data that spans all observations, but has the order of the observations shuffled.

The values of data itself are not copied. Instead only the indices are shuffled. This function calls obsview to accomplish that, which means that the return value is likely of a different type than data.

			
			# For Arrays the subset will be of type SubArray
@assert typeof(shuffleobs(rand(4,10))) <: SubArray

# Iterate through all observations in random order
for x in eachobs(shuffleobs(X))
    ...
end

The optional parameter rng allows one to specify the random number generator used for shuffling. This is useful when reproducible results are desired. By default, uses the global RNG. See Random in Julia's standard library for more info.

For this function to work, the type of data must implement numobs and getobs. See ObsView for more information.