MACD formula

[nicpo]

HI,
I am looking for the original formula of the MACD as used in the efs study, the one I'm using does not give the same results as the efs standard one.

macd : MAe(12,C) - MAe(26,C) -> is nearly OK

macdsignal : MAe(9, macd) -> is completely wrong !

or is it in the Exponential MA the problem ? I'm using :

MAe(t) = MAe(t-1) + k x ( macd - MAe(t-1))

where k = 2/(9 +1) = 0.16

this MAe formula works fine to simulate the standard MAe of EFS but not the MACD signal !

NGP

[ACM]

NGP
As far as I know the builtinMACD.efs and the Basic Study MACD use the following as a default

macd = EMA(12,C) - EMA(26,C)
signal = MA(9, macd)

Also, an example of how eSignal calculates an EMA is provided by JasonK here
Alex