Detrended Ehlers Leading Indicator [CC]

// Copyright (c) 2019-present, Franklin Moormann (cheatcountry)
// Detrended Ehlers Leading Indicator [CC] script may be freely distributed under the MIT license.
// ------------------------------------------------------------------------------------------------
// Original author:  cheatcountry
// Original title:   Detrended Ehlers Leading Indicator [CC]
// Licence:          MIT (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('Detrended Ehlers Leading Indicator [CC]', max_bars_back=3000, overlay=false)

f_security(_symbol, _res, _src, _repaint) =>
    _src[_repaint ? 0 : barstate.isrealtime ? 1 : 0][_repaint ? 0 : barstate.isrealtime ? 0 : 1]

res = input.timeframe(title="Resolution", defval='')
rep = input.bool(title="Allow Repainting?", defval=false)
bar = input.bool(title="Allow Bar Color Change?", defval=false)
h = f_security(syminfo.tickerid, res, high, rep)
l = f_security(syminfo.tickerid, res, low, rep)
length = input.int(title='Length', defval=14, minval=1)

alpha = length > 2 ? 2.0 / (length + 1) : 0.67
price = (math.max(h, nz(h[1])) + math.min(l, nz(l[1]))) / 2

ma1 = 0.0
ma1 := alpha * price + (1 - alpha) * nz(ma1[1], price)

ma2 = 0.0
ma2 := alpha / 2 * price + (1 - alpha / 2) * nz(ma2[1], price)

dsp = ma1 - ma2

ma3 = 0.0
ma3 := alpha * dsp + (1 - alpha) * nz(ma3[1])

deli = dsp - ma3

slo = deli - nz(deli[1])
sig = slo > 0 ? (slo > nz(slo[1]) ? 2 : 1) : slo < 0 ? (slo < nz(slo[1]) ? -2 : -1) : 0
alertcondition(ta.crossover(sig, 1), "Strong Buy Signal", "Strong Bullish Change Detected")
alertcondition(ta.crossunder(sig, -1), "Strong Sell Signal", "Strong Bearish Change Detected")
alertcondition(ta.crossover(sig, 0), "Buy Signal", "Bullish Change Detected")
alertcondition(ta.crossunder(sig, 0), "Sell Signal", "Bearish Change Detected")
alertcondition(ta.crossover(sig, 0) or ta.crossover(sig, 1), "All Buy Signals", "Any Bullish Change Detected")
alertcondition(ta.crossunder(sig, 0) or ta.crossunder(sig, -1), "All Sell Signals", "Any Bearish Change Detected")
deliColor = sig > 1 ? color.green : sig > 0 ? color.lime : sig < -1 ? color.maroon : sig < 0 ? color.red : color.black
barcolor(bar ? deliColor : na)
hline(0)
plot(dsp, title="DSP", linewidth=1, color=color.white)
plot(deli, title="DELI", linewidth=2, color=deliColor)

This file is under the MIT License; it is a port of the original by cheatcountry, 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