uncle wong wrote: Sat Aug 12, 2017 8:55 am Mladen,

Is it possible for you to create bollinger band based on kalman filter?So kalman shoudl be used for smoothing instead of SMA.

NonLinearKalmanBBands_v1.0 600+
Here is Nonlinear Kalman Bbands version indicator with 14 prices - filter option - pre smooth and pre smoothed 31 methods and some more features - the picture with default values