OPEN-SOURCE SCRIPT
Revolution Statistical Auto Envelope
This envelope uses the distance relative to a moving average to plot size of the envelope, therefore you can use any length you like and it will give you a meaningful stastical measure of price fluctuation.
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.
Disclaimer
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