AMA2
- adaptive moving average

Moving averages, summation
(AmiBroker 3.50)

SYNTAX ama2( ARRAY, SMOOTHINGFACTOR, FEEDBACKFACTOR )
RETURNS ARRAY
FUNCTION calculates adaptive moving average - simliar to EMA() but smoothing factor could be time-variant (array).
AMA2 has a separate control of feedbackfactor which is normally (1-SMOOTHINGGFACTOR). Internally this function works like this: today_ama = SMOOTHINGFACTOR * array + FEEDBACKFACTOR * yesterday_ama
EXAMPLE The example of volatility-weighted adaptive moving average formula: graph0 = ema( close, 15 );
fast = 2/(2+1);
slow = 2/(30+1);
dir=abs(close-ref(close,-10));
vol=sum(abs(close-ref(close,-1)),10);
ER=dir/vol;
sc =( ER*(fast-slow)+slow)^2; graph0 = ama2( close, sc, 1-sc);
SEE ALSO

References:

The AMA2 function is used in the following formulas in AFL on-line library:

More information:

See updated/extended version on-line.