Re: [amibroker] Only buy the first time the condition is true

[Keith McCombs <kmccombs@xxxxxxxxxxxx>]

Robert --

Buy = Sell = enable = intrade = 0;
MA_Short = MA(C,20)
MA_Med = MA(C,100)
MA_long = MA(C,200);
intrade = flip(buy, sell);
ready = flip(Cross(MA_Med, MA_Long) AND !intrade, Buy);
buy = ready AND Cross(MA_Short, MA_Med);
Sell = Cross(MA_Med, MA_Short);

-- Keith


On 3/5/2010 04:50, ics4mer wrote:

 

Hi,

Looking for some help with following situation.

Say we have 3 moving averages:

MA_Short = MA(C,20)
MA_Med = MA(C,100)
MA_long = MA(C,200);

My signals are the following

Buy = MA_Med > MA_Long AND Cross(MA_Short, MA_Med);
Sell = Cross(MA_Med, MA_Short);

However, I only want to trade the first occurence of cross(MA_short,MA_Med).

I don't want to take another long trade until MA_Med has dipped below MA_Long and risen above MA_Long again and the Cross(short, med) situation occurs again.

I suspect it has something to do with the flip() function but I can't quite sus it out!

I've nearly worked it out with a loop, but I'm sure that it's not the correct way to use AFL.

Any help greatly appreciated!

TIA

Robert

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