The COBVOnArray class is intended for calculation of OBV (On Balance Volume) on indicator buffers.
On Balance Volume Technical Indicator (OBV) is a
momentum technical indicator that relates volume to price change. The
indicator, which Joseph Granville came up with, is pretty simple. If the
close price of the current bar is higher than that of the previous bar,
the volume of the current bar is added to the previous OBV. If the
current bar close price is lower than of the previous one, the current
volume is subtracted from the previous OBV.