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https://github.com/mihakralj/QuanTAlib.git
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Miha Kralj
44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
// Licensed under the Apache License, Version 2.0
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// © mihakralj
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//@version=6
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indicator("Volume Force (VF)", "VF", overlay=false)
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//@function Calculates Volume Force, measuring the force of volume behind price movements
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//@param len Smoothing period (default: 14)
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//@param src Source price for calculation (default: close)
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//@param src_vol Volume data (default: volume)
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//@returns float The Volume Force value
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vf(simple int len, series float src = close, series float src_vol = volume) =>
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float price_change = src - nz(src[1], src)
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float raw_vf = price_change * nz(src_vol, 0.0)
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float alpha = 2.0 / (len + 1)
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var bool warmup = true
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var float e = 1.0
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var float ema_val = 0.0
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var float vf_result = raw_vf
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ema_val := alpha * (raw_vf - ema_val) + ema_val
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if warmup
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e *= (1.0 - alpha)
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float compensator = 1.0 / (1.0 - e)
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vf_result := compensator * ema_val
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warmup := e > 1e-10
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else
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vf_result := ema_val
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vf_result
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// ---------- Main Calculation ----------
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// Parameters
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length = input.int(14, "Smoothing Period", minval=1)
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// Calculation
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vf_line = vf(length, close, volume)
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// ---------- Plots ----------
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plot(vf_line, "Volume Force", color=color.yellow, linewidth=2)
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hline(0, "Zero Line", color.gray, linestyle=hline.style_dashed)
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// Color zones for visual clarity
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bgcolor(vf_line > 0 ? color.green : color.red)
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