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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("Chande Momentum Oscillator (CMO)", "CMO", overlay=false)
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//@function Calculates Chande Momentum Oscillator using circular buffer for efficiency
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//@param src Source series to calculate CMO for
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//@param len Lookback period for calculations
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//@returns CMO value measuring momentum strength and direction
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cmo(series float src, simple int len) =>
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if len <= 0
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runtime.error("Length must be greater than 0")
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var float sum_up = 0.0, var float sum_down = 0.0
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var array<float> up_buffer = array.new_float(len, na)
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var array<float> down_buffer = array.new_float(len, na)
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var int head = 0
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float diff = src - src[1]
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float up = diff > 0 ? diff : 0.0
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float down = diff < 0 ? -diff : 0.0
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float old_up = array.get(up_buffer, head)
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float old_down = array.get(down_buffer, head)
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if not na(old_up)
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sum_up -= old_up
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sum_down -= old_down
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array.set(up_buffer, head, up)
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array.set(down_buffer, head, down)
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sum_up += up
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sum_down += down
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head := (head + 1) % len
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float denom = sum_up + sum_down
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denom != 0.0 ? 100 * (sum_up - sum_down) / denom : 0.0
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// ---------- Main loop ----------
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// Inputs
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i_length = input.int(14, "Length", minval=1)
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i_source = input.source(close, "Source")
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// Calculation
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cmo_value = cmo(i_source, i_length)
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// Plot
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plot(cmo_value, "CMO", color=color.yellow, linewidth=2)
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