This script connect together sequence of intervals with different function on each interval, so it look good
v_in = [100, 200, 300, 400, 500, 600]
v_out = [1, 2, 1, 1.5, 0.5, 1, 0.2]
v_def = [1.1, 2, 1, 0.97, 1, 1]
v_type = [ItemType.TIIncrease, ItemType.TILogistic, ItemType.TILogistic, ItemType.TIDecrease, ItemType.TILinear, ItemType.TIConstant]