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https://github.com/mihakralj/QuanTAlib.git
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Miha Kralj
24e86d762a
- Updated BBWN, BBWP, CCV, CV, CVI, EWMA, GKV, HLV, HV, Jvolty, JVOLTYN, MASSI, NATR, RSV, RV, RVI, TR, UI, VOV, VR, YZV indicators with documentation links. - Added documentation links for Aberration, Acceleration Bands, Andrews' Pitchfork, Adaptive Price Zone, ATR Bands, Bollinger Bands, Center of Gravity, Donchian Channels, Decay Min-Max Channel, Detrended Synthetic Price, EACP, EBSW, HOMOD, Jurik Volatility Bands, Keltner Channel, MA Envelope, Min-Max Channel, Price Channel, Regression Channels, Standard Deviation Channel, Stoller Average Range Channel, Super Trend Bands, Ultimate Bands, Ultimate Channel, VWAP Bands, and VWAP with Standard Deviation Bands.
27 lines
890 B
Plaintext
27 lines
890 B
Plaintext
// The MIT License (MIT)
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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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