[amibroker] Coding a formula

[MikAB <elmikamail-ab@xxxxxxxx>]

Hi All,

 

I would like to code the formula described is the attached picture.

I tried serveal formulas such as :

 

RoR=ROC(Close,1,False);

 

Lambda=Optimize("Lambda",0.5,0.1,1,0.05);
Length = Optimize ("MML",20,10,30,1);

for (i =0 ; i < BarCount ; i=i+1)

{

ExpMovAver = ExpMovAver + (Lambda*Sum(((1-Lambda)^i)*Ref(RoR,(Lastbar-i)),Length));

}

 

or

ExpMovAver =Lambda*Sum(((1-Lambda)^Currentbar)*Ref(RoR,(Lastbar-Currentbar)),Length);

Can anyone tell me what is wrong?

 

In addition I was wondering whether there is a way to run a formula step by step and watch the behavior of different ellements?

 

Many thanks for your help.

 

Mikael

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