feat: add new indicators (Decay, Edecay, MinusDi, MinusDm, PlusDi, PlusDm, Maxindex, Minindex, Sarext) and update pine scripts, core libs, validation tests, and python bindings
2026-03-09 13:45:46 -07:00
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// Licensed under the Apache License, Version 2.0
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2026-01-18 19:02:03 -08:00
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// © mihakralj
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//@version=6
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fix(docs): correct .md documentation across errors, dynamics, filters, forecasts, momentum, numerics, oscillators, reversals, statistics, trends, volatility, volume
2026-03-10 18:38:23 -07:00
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indicator("Triple Exponential Average (TRIX)", "TRIX", overlay=false)
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2026-01-18 19:02:03 -08:00
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//@function Calculates TRIX oscillator with compensation
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//@param source Series to calculate TRIX from
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//@param period Period for triple exponential smoothing
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//@returns TRIX value (percentage rate of change of triple EMA)
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trix(series float source, simple int period) =>
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if period <= 0
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runtime.error("Period must be positive")
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float src = na(source) ? source[1] : source
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float alpha = 2.0 / (period + 1)
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float d = 1 - alpha
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var float e1 = 1.0, var float e2 = 1.0, var float e3 = 1.0
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var bool warmup = true
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var float rema1 = 0, var float rema2 = 0, var float rema3 = 0
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var float ema1 = src, var float ema2 = src, var float ema3 = src
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var float prev_ema3 = src
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rema1 := alpha * (src - rema1) + rema1
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if warmup
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e1 *= d, e2 *= d, e3 *= d
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ema1 := rema1 / (1.0 - e1)
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rema2 := alpha * (ema1 - rema2) + rema2
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ema2 := rema2 / (1.0 - e2)
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rema3 := alpha * (ema2 - rema3) + rema3
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ema3 := rema3 / (1.0 - e3)
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warmup := e1 > 1e-10
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else
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ema1 := rema1
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rema2 := alpha * (ema1 - rema2) + rema2
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ema2 := rema2
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rema3 := alpha * (ema2 - rema3) + rema3
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ema3 := rema3
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trix_value = prev_ema3 != 0 ? 100 * (ema3 - prev_ema3) / prev_ema3 : 0
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prev_ema3 := ema3
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na(source) ? na : trix_value
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// ---------- Main loop ----------
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// Inputs
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i_period = input.int(14, "Period", minval=1, maxval=100, tooltip="Period for triple exponential smoothing")
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i_source = input.source(close, "Source", tooltip="Price series to analyze")
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// Calculation
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trix_value = trix(i_source, i_period)
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// Plot
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plot(trix_value, "TRIX", color=color.yellow, linewidth=2)
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