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("Second Derivative / Acceleration (ACCEL)", "ACCEL", overlay=false, precision=8)
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2026-01-18 19:02:03 -08:00
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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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//@function Calculates the second finite difference (acceleration): Accel = V[t] - 2*V[t-1] + V[t-2]
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//@param src Source series
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//@returns Second difference. Returns 0.0 until 3 bars are available.
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//@optimized Uses direct history access and FMA-equivalent for zero-allocation streaming.
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accel(series float src) =>
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float v0 = src
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float v1 = src[1]
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float v2 = src[2]
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if na(v1) or na(v2)
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0.0
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else
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v0 - 2.0 * v1 + v2
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2026-01-18 19:02:03 -08:00
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// ---------- Main loop ----------
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// Inputs
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i_source = input.source(close, "Source")
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// Calculation
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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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a = accel(i_source)
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2026-01-18 19:02:03 -08:00
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// Plot
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plot(a, "Accel", color=color.yellow, linewidth=2)
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