This is a local polynomial regression of price data. It does not give any explicit prediction, but it helps to show the overall trend and movement of price. Due to limitation of Pine, this script can only calculate for a limited length of price series, and the order of polynomial regression cannot be too high.
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 a publication is governed by House Rules.
You can favorite it to use it on a chart.
Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.
