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#1 Selling Amibroker Plugin featuring:
Kalman Filter for Amibroker (AFL)
Translated & modified simple Kalman Filter code written in C freely available on internet to amibroker afl. Experts can contribute to the coding by projecting the Kalman filter value one bar ahead into future. Tested on Amibroker 5.6
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Indicator / Formula
_SECTION_BEGIN("Kalman Filter"); x_temp_est = 0; x_est_last = 0; P_temp = 0; P_last = 0; Q = 0.022; R = 0.617; P = (H +L)/ 2; z_real = EMA(EMA(P,3),3) ; x_est_last = z_real + TSF(P,3); for (i=0;i<BarCount;i++) { x_temp_est = x_est_last; P_temp = P_last + Q; K = P_temp * (1.0/(P_temp + R)); z_measured = z_real; x_est = x_temp_est + K * (z_measured - x_temp_est); P = (1- K) * P_temp; P_last = P; x_est_last = x_est; } Plot(x_est, "Kalman Filter", colorGreen, styleLine|styleThick); _SECTION_END();
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Sorry, couldn’t Upload the screenshot !
nice attempt.
good logic.
This is nothing else.. EMA 3
It works well even without EMA 3..I used it to have a smoother line