OPEN-SOURCE SCRIPT
Updated Kalman Filter [by Hajixde]

A simple form of recursive filtering using an adjustable gain and a memory length.
The filter predicts the next sample based on the previous values and the calculated error.
The filter predicts the next sample based on the previous values and the calculated error.
Release Notes
Regression fitter updated.Error estimator updated.
Release Notes
A secondary filter is added.Slope and intercept calculations are done by calling a function.
Open-source script
In true TradingView spirit, the creator of this script has made it open-source, so that traders can review and verify its functionality. Kudos to the author! While you can use it for free, remember that republishing the code is subject to our House Rules.
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.
Open-source script
In true TradingView spirit, the creator of this script has made it open-source, so that traders can review and verify its functionality. Kudos to the author! While you can use it for free, remember that republishing the code is subject to our House Rules.
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.