OPEN-SOURCE SCRIPT

Bar-Close Confirmed Supertrend

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Overview
This indicator is a Supertrend-style trend follower that confirms direction changes only after a bar closes. Trend flips are determined using the previous bar’s close relative to the bands, which helps avoid intrabar changes during live candles.

How it works
  • Computes ATR (Average True Range)
  • Builds upper/lower bands using ATR and a multiplier
  • Updates trend direction only when a prior candle confirms a break of the band


Confirmation logic (bar-close based)
Trend direction is updated using conditions based on the previous candle, such as:
  • close[1] > upper[1] → confirm uptrend
  • close[1] < lower[1] → confirm downtrend

Because signals are confirmed on the prior bar, trend changes and markers are displayed only when confirmation exists.

Signals
  • Uptrend confirmation: prior candle closes above the upper band → bullish marker
  • Downtrend confirmation: prior candle closes below the lower band → bearish marker


Inputs
  • ATR Length (default 10)
  • ATR Multiplier (default 3.0)


Notes
This script is intended for bar-close workflows. Behavior and responsiveness may differ across markets and timeframes depending on volatility and chosen settings.

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