PINE LIBRARY

MRScoringLibrary

150
Library "MRScoringLibrary"
Mean-reversion graduated scoring: z-score any indicator into -3 to +3 integer scale.

mrScore(src, lookback, alreadyZ, invert)
  Converts any continuous indicator value into a graduated
mean-reversion score from -3 (deep overbought) to +3 (deep oversold).
  Parameters:
    src (float): Raw indicator value (or z-score if alreadyZ=true)
    lookback (int): Rolling lookback for z-score calc (ignored if alreadyZ=true)
    alreadyZ (bool): True if src is already a z-score — skips internal z-scoring
    invert (bool): True if HIGH indicator value = oversold (flips mapping)
  Returns: Integer score: +3 to -3

zScore(src, lookback)
  Returns the raw z-score without mapping to graduated scale.
Useful for plotting or custom threshold logic.
  Parameters:
    src (float): Raw indicator value
    lookback (int): Rolling lookback period
  Returns: Float z-score

mrScoreCustom(src, lookback, alreadyZ, invert, sd1, sd2, sd3)
  Same as mrScore but with configurable SD band edges.
For indicators where standard 1/2/3 SD bands don't fit well
(e.g., an indicator only becomes useful at 1.5 SD).
  Parameters:
    src (float): Raw indicator value (or z-score if alreadyZ=true)
    lookback (int): Rolling lookback for z-score calc
    alreadyZ (bool): True if src is already a z-score
    invert (bool): True if HIGH value = oversold
    sd1 (float): Inner band threshold (default would be 1.0)
    sd2 (float): Middle band threshold (default would be 2.0)
    sd3 (float): Outer band threshold (default would be 3.0)
  Returns: Integer score: +3 to -3

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