iterator x
This returns an Iterator object that may be used to iterate through x.
i1 : i = iterator (RSymbol "iris")_"Petal.Length" o1 = i o1 : Iterator
i2 : next i o2 = [1] 1.4 o2 : RObject of type double
i3 : next i o3 = [1] 1.4 o3 : RObject of type double
i4 : next i o4 = [1] 1.3 o4 : RObject of type double