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try this --->
cond1 = Open > ValueWhen(Buy,BuyPrice,1);
Sell=Sum(cond1 ,3)==3;// sum for 3 periods and trigger when cond1
happens 3 times ie 3 periods in a row.
might make it easier to interpret :
cond1 = 1 when the open is > the buyprice
the sell occure s when this added over 3 periods = 3 . i.e 3
consequtive opens greater than the original buyprice triggers the SELL
Moz
--- In amibroker@xxxxxxxxxxxxxxx, Andrew Z <wizard@xxxx> wrote:
> Hey all,
>
> I'm still getting my head around all this AFL code, so bear with me :-)
>
> Take the following code:
>
> Buy=Cross(C,EMA(C,20)) AND C < 10;
> BuyPrice=Open;
> Sell=Sum(Open > ValueWhen(Buy,BuyPrice,1),3)==3;
>
> This last line has me a little perplexed. ValueWhen returns the
value of
> BuyPrice (which is the Open) on the day the Buy condition was true.
What
> I don't get is how the Sum comes into it and how the Sell is triggered.
>
> Thanks,
> Andrew.Sell=Sum(Open > ValueWhen(Buy,BuyPrice,1),3)==3;
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