RedK_LW'sTrend

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © RedKTrader
// ------------------------------------------------------------------------------------------------
// Original author:  RedKTrader
// Original title:   RedK_Larry William's Trend
// Licence:          MPL-2.0 (the header above is the original notice, kept verbatim)
// Pine version:     4
// 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
// Converted by the FloScript converter from a Pine-compatible v4 source.

indicator(title="RedK_LW'sTrend", shorttitle="RedK_WilliamsTrend", overlay=true, timeframe="")
// I'm not the author of this indicator / concept -- this code was ported from a differentd platform
// i found this code while researching Larry William's Trend indicator
// i left the original defaults and made minimum changes to how this was supposed to be plotted - even kept some of the orginal variable names
// if i would have coded this, i would have possibly coded it differently - tweak the math slightly for the channel boundaries
// it seems this is somehow related to the famous "SuperTrend" indicator - but honestly i don't have an idea how they are connected.
// Note that there are another set of indicators relating to a different "Bill Williams" - not the same source.

length = input.int(title="Length", defval=7, minval=1)
ATR_Period = input.int(title="ATR Period", defval=66, minval=1)
ATRMulti = input.float(title="ATR Multiplier", defval=2.236, minval=1)

ATR = ta.atr(ATR_Period) * ATRMulti

midPrice1 = ta.highest(length)
midPrice2 = ta.lowest(length)
midPrice = (midPrice1 + midPrice2) / 2
Trail = 0.0
Lower = midPrice + ATR
Upper = midPrice - ATR

c1 = close > Trail[1] and close[1] > Trail[1]
c2 = close < Trail[1] and close[1] < Trail[1]
c3 = close > Trail[1]

Trail := if c1
    math.max(Trail[1], Upper)
else if c2
    math.min(Trail[1], Lower)
else if c3
    Upper
else
    Lower

myred = #ff0000
mygreen = #00ff00
uptrend = midPrice > Trail
p1 = plot(Trail, color=uptrend ? mygreen : myred, linewidth=2)
p2 = plot(midPrice, color=color.new(color.yellow, 100))

plot(Lower, color=color.new(color.lime, 80))
plot(Upper, color=color.new(color.orange, 80))

fill(p1, p2, color=color.new(uptrend ? mygreen : myred, 75))

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