Неофициальный форум клиентского терминала Альфа-Инвестиции (Альфа-Директ 4). Обсуждение терминала, обмен опытом, разработка скриптов индикаторов и стратегий.
https://www.alfadirect4.ru/
it uses an approximationof Up and Down Volume (because they are not kept by Tradingview/not accessible by Pinescript).
The approximation is:
The “up path” on the “up” candle can be approximated by ( High-Low ).
The “down path” on the “up” candle can be approximated by (High-Close)+(Open-Low).
(and similar for the down candle, like in the 1st post.)
Total path=up path + down path.
Up volume = Tick volume * up path/total path
Down volume = Tick volume * down path/total path
(description from original author: kprsa)