RedK_Supply/Demand Volume Viewer v3.0

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © RedKTrader - May 14 2021
// ------------------------------------------------------------------------------------------------
// Original author:  RedKTrader
// Original title:   RedK_Supply/Demand Volume Viewer v1
// Licence:          MPL-2.0 (the header above is the original notice, kept verbatim)
// Pine version:     5
// Fetched:          2026-10-12
// Ported to FloScript by FloSignals; modifications under MPL-2.0.
// Converter:        @flosignals/floscript 0.1.0, strict mode, score 100/100
// ------------------------------------------------------------------------------------------------
//@floscript=1
//@version=5

indicator(title='RedK_Supply/Demand Volume Viewer v3.0', shorttitle='V.Viewer_v3.0', format=format.volume, timeframe='', timeframe_gaps=false)

// Supply & Demand Volume Viewer calculates and plots a "price-bar-weighted" view of volume - it basically uses the shape of a price bar to estimate
// the supply vs demand shares of the traded volume, plots a moving average of both, and an estimated "net volume"
// This provides an insightful way to look at the traded volume compared to the classic volume histogram view

// ============================================================================================================================================
// inputs
// ============================================================================================================================================
l = input.int(title='Volume Length', defval=10, minval=1)
s = input.int(title='Smoothing', defval=3, minval=1)

// ============================================================================================================================================
// variables
// ============================================================================================================================================

col_red = color.new(#ff0000, 50)
col_green = color.new(#00ff00, 50)
col_gold = color.new(#ffeb3b, 50)
upday = close > open
v = volume

// ============================================================================================================================================
// Calc supply & Demand per Bar  .. beware of the odd case of 0 price movement during bar.. assigne equal weights to bulls & bears
// ============================================================================================================================================

Body = math.abs(close - open)
BarRange = high - low
Wick = BarRange - Body
RealRange = BarRange + Wick

BScore = BarRange > 0 ? (close >= open ? BarRange / RealRange : Wick / RealRange) : 0.5
BullScore = BScore * v
demand = ta.wma(ta.wma(BullScore, l), s)
BearScore = v - BullScore
supply = ta.wma(ta.wma(BearScore, l), s)
NetVol = demand - supply

// ============================================================================================================================================
// Plots  -- classic volume bars are hidden by default
// ============================================================================================================================================
hline(0, title='zero line', linestyle=hline.style_dotted, color=col_gold) //, editable = false)
plot(v, title='Volume', style=plot.style_columns, color=upday ? col_green : col_red, display=display.none)

// Net Volume Plot
plot(NetVol, title='Volume Viewer', style=plot.style_area, color=NetVol >= 0 ? col_green : col_red, linewidth=4)

plot(supply, title='Supply', style=plot.style_circles, color=color.new(color.orange, 0), linewidth=2, join=true)
plot(demand, title='Demand', style=plot.style_cross, color=color.new(color.aqua, 0), linewidth=2, join=true)

This file is under the Mozilla Public License 2.0; it is a port of the original by RedKTrader, with the original licence header kept and the changes made for FloScript noted in the file.

• v22026-10-14

  Library refresh 2026-10-14

• v12026-10-12

  Library refresh 2026-10-12