mirror of
https://github.com/mihakralj/QuanTAlib.git
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33 lines
890 B
Plaintext
33 lines
890 B
Plaintext
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// Licensed under the Apache License, Version 2.0
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// © mihakralj
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//@version=6
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indicator("Linear Decay (DECAY)", "DECAY", overlay=true)
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//@function Calculates linear decay: output = max(input, prev_output - 1/period)
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//@param source Source price series
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//@param length Decay period
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//@returns Decayed value that tracks peaks and descends linearly
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decay(series float source, simple int length) =>
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var float prev = na
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float scale = 1.0 / length
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float result = na
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if na(prev)
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result := source
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else
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float d = prev - scale
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result := source > d ? source : d
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prev := result
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result
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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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i_length = input.int(5, "Length", minval=1)
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// Calculate Decay
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float decay_val = decay(i_source, i_length)
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// Plot
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plot(decay_val, "Decay", color=color.yellow, linewidth=2)
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