Source: https://fxcodebase.com/code/viewtopic.php?f=17&t=3611
Forum: 17 · Topic 3611 · 3 post(s)
Alexander.Gettinger · Sun Mar 06, 2011 11:39 pm
Indicator separate volume in correspondence to open, close, high and low values of bar.
Formulas: UP volume=VolumeUP_Coeff/(UP_Coeff+DN_Coeff), DN volume=VolumeDN_Coeff/(UP_Coeff+DN_Coeff), where UP_Coeff=High-Open, DN_Coeff=Close-Low.

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MT4/Mq4 version viewtopic.php?f=38&t=64529&p=111508#p111508
The indicator was revised and updated
Alexander.Gettinger · Sun Mar 06, 2011 11:42 pm
Other version of OHLC volume. Oscillator show difference between UP and DN volume form previous indicator.

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Apprentice · Fri Mar 03, 2017 8:51 am
Indicator was revised and updated.