OPEN-SOURCE SCRIPT
Gapology
This indicator can be used as a simple measure of price action tradability. It's an alternative to volume that focuses on the gaps between close and open candle prices. The bigger the gaps, the more spread and slippage you'll get when trading.
Open-source script
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in publication is governed by House rules. You can favorite it to use it on a chart.
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