Using the [ ] Identifier on amibroker

equityraiser · #1 17th October 2006, 06:13 PM

Hello,

I am a french trader and user of amibroker( former TS user ) ,and I always have the same problems with array identifiers.

On TS, you simply use a variables between the brackets, but on ami, it seems like you have to put [barcount - var]...

Anyone can help me and tell where the error is in this code. It's a simple mov avg system referring to the past value of the mov avg:

Amount = Param( "dollz", 10000, 50, 1000000, 50 );
defMAL = Param("MAL", 10, 2, 200, 10 );
defR = Param( "Recul", 30, 2, 30, 2 );

MAL = Optimize( "MAL", defMAL, 2, 100, 5 );
R = Optimize( "Recul", defR, 1, 20, 2 );

PositionSize = Amount;

MyMA = MA( Close, MAL );

Buy = MyMA > MyMA[BarCount - R];
Sell = MyMA < MyMA[BarCount - R];

Short = MyMA < MyMA[BarCount - R];
Cover = MyMA > MyMA[BarCount - R];

Thanks for your help.

saji oommen · #2 17th October 2006, 06:46 PM

Hello,

There are people with good knowledge of AFL in this forum. If they cannot help you i would suggest you go to amibroker@yahoogroups.com . That is where all the top experts in AFL are. They will surely help you.

Regards

Saji

equityraiser · #3 17th October 2006, 10:53 PM

OK

THANKS

i 'll post it there.

equityraiser · #4 18th October 2006, 12:55 PM

Please, is there someone to help me here? They just said me that the question has been asked before on yahoogroups.There is like thousands of threads. I didn't find it.

Please tell me a guy with sufficient knowledge. I will send him a private message.

Thanks a lot

equityraiser · #5 18th October 2006, 02:06 PM

No , it's OK. I've found it. You have to use the ref function.

murthymsr · #6 18th October 2006, 02:21 PM

Quote:

Originally Posted by equityraiser

Hello,

I am a french trader and user of amibroker( former TS user ) ,and I always have the same problems with array identifiers.

On TS, you simply use a variables between the brackets, but on ami, it seems like you have to put [barcount - var]...

Anyone can help me and tell where the error is in this code. It's a simple mov avg system referring to the past value of the mov avg:

Amount = Param( "dollz", 10000, 50, 1000000, 50 );
defMAL = Param("MAL", 10, 2, 200, 10 );
defR = Param( "Recul", 30, 2, 30, 2 );

MAL = Optimize( "MAL", defMAL, 2, 100, 5 );
R = Optimize( "Recul", defR, 1, 20, 2 );

PositionSize = Amount;

MyMA = MA( Close, MAL );

Buy = MyMA > MyMA[BarCount - R];
Sell = MyMA < MyMA[BarCount - R];

Short = MyMA < MyMA[BarCount - R];
Cover = MyMA > MyMA[BarCount - R];

Thanks for your help.

hi equityraiser,
i am not an expert on TA or AB, so not responded to your first post.

but i became inquisitive on your second post. i ran the AFL and the code ran without any errors after adding a few lines, required to running in explorer mode.

if you like, you may post some more information about what the code does, for a better understanding.

i am not sure if it helps or not, but i am posting the revised code and the exported csv files and the AFL code. (all files renamed to TXT extention)

all the best.
murthymsr

bvpraveen · #7 2nd November 2006, 09:47 PM

Quote:

Originally Posted by equityraiser

Hello,

I am a french trader and user of amibroker( former TS user ) ,and I always have the same problems with array identifiers.

On TS, you simply use a variables between the brackets, but on ami, it seems like you have to put [barcount - var]...

Anyone can help me and tell where the error is in this code. It's a simple mov avg system referring to the past value of the mov avg:

Amount = Param( "dollz", 10000, 50, 1000000, 50 );
defMAL = Param("MAL", 10, 2, 200, 10 );
defR = Param( "Recul", 30, 2, 30, 2 );

MAL = Optimize( "MAL", defMAL, 2, 100, 5 );
R = Optimize( "Recul", defR, 1, 20, 2 );

PositionSize = Amount;

MyMA = MA( Close, MAL );

Buy = MyMA > MyMA[BarCount - R];
Sell = MyMA < MyMA[BarCount - R];

Short = MyMA < MyMA[BarCount - R];
Cover = MyMA > MyMA[BarCount - R];

Thanks for your help.

Hi,

I tried to write a better AFL, and came up with the one below. Let me know if
I'm wrong anywhere.

Amount = Param( "dollz", 10000, 50, 1000000, 50 );
defMAL = Param("MAL", 10, 2, 200, 10 );
defR = Param( "Recul", 30, 2, 30, 2 );

MAL = Optimize( "MAL", defMAL, 2, 100, 5 );
R = Optimize( "Recul", defR, 1, 20, 2 );

PositionSize = Amount;

MyMA = MA( Close, MAL );

for(i=R; i<BarCount; i++)
{
prevMA[i]=MyMA[i-R];
}

Buy = Cross(MyMA, prevMA);
Sell = Cross(prevMA, MyMA);

Thanks,
Praveen.

ajith_kz · #8 13th November 2006, 06:03 PM

hello,
I am Ajith , I am new to this site.
Regards
Ajith

bvpraveen · #9 13th November 2006, 06:18 PM

Quote:

Originally Posted by ajith_kz

hello,
I am Ajith , I am new to this site.
Regards
Ajith

Hello Ajith,

Welcome to Traderji.

BTW, Ajith, there are different sections devoted for specific catergory. You can find them from the home page. Please try to post the messages in the respective sections so that you can get related replies.

All the best,
Praveen.

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