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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indicator("Negative Volume Index (NVI)", "NVI", overlay=false)
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//@function Calculates Negative Volume Index, tracks price changes on days with lower volume
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//@param src Price series to use for calculation
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//@param vol Volume series
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//@param start_value Starting value for NVI (typically 100 or 1000)
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//@returns float The NVI value
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nvi(series float src, series float vol = volume, simple float start_value = 100.0) =>
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var float nvi_value = start_value
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if not (na(src) or na(vol) or na(src[1]) or na(vol[1]) or src[1] == 0.0 or vol[1] <= 0.0) and vol < vol[1]
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nvi_value := nvi_value * src / src[1]
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nvi_value
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// ---------- Main Calculation ----------
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// Parameters
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src = input.source(close, "Price Source")
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// Calculations
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nvi_line = nvi(src, volume)
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// Plot
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plot(nvi_line, "NVI", color=color.yellow, linewidth=2)
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