EMA

["Louw-Roux Coetzer" <lcoetzer@xxxx>]

Dear Tomasz
 
Could you please tell me exactly how AmiBroker goes 
about calculating the Exponential Moving Average...especially the smoothing 
factor it uses...
 
Currently I'm using this 
formula:
 
        
    ( Today's close * X1 )+( Yesterday's Moving Average * 
X2 )
 
Where X1 and X2 are the smoothing factors 
calculated as follows:
 
n =  The period of the EMA e.g. 10 
days
s =  Smoothing Factor
 
X1 = 2 / (n + s)
X2 = s - X1
 
When I run this formula on say 20 day's ofdata 
from a specific share and compare it to the EMA calculation in AB, I find a 
difference...thus there must be a difference in the calculations AB uses...I 
need this to compile a possible solution to my previous e-mail concerning 
MACD/Price matrix creation.
 
Kind regards
 
Louw Coetzer