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On 7/13/05, Tony Lei <yiupang91@xxxxxxxxx> wrote:
> Hi all,
>
> This is what i have so far. When I have these two filters together, AB
> takes a long time to scan through entire database. So i had to separate
> them into two different scans. I first filter the stocks based on my
> criteria and then apply my own linreg scan. Is there a more efficient way
> to do this in one simple code? Like filtering and then copy results into
> watchlist (list 0) and overwriting every time I run it.
>
> thank you for your time
>
> tony
> qitrader
>
> //*Filtering
> Filter = Close > 10 AND V >= 500000 AND EMA (V, 30) >= 300000 AND ATR (15)
> >= 1.2;
> ATR15 = ATR (15);
> EMA30 = EMA (V, 30);AddColumn (C, "Close");
> AddColumn (V, "Volume");
> AddColumn (ATR15, "Average True Range");
> AddColumn (EMA30, "30 Day Average Volume");
> //*
> //*LinReg Scan
>
> LinRegVal = LinearReg ( Close, 3 ) ;
> LinRegChanVal=LinearReg (Close, 23);
> LinRegChanSlope = LinRegSlope (Close, 23);
>
> SDev=StDev (Close,23);
> LowerLinRegChanVal=LinRegChanVal-.85*SDev;
> UpperLinRegChanVal=LinRegChanVal+.85*SDev;
>
> Cond1 = LinearReg(Close,3) > Ref(LinearReg(Close,3),-1) AND
> LinRegSlope(Close,23) >= 0 AND Close < LowerLinRegChanVal;
>
> Cond2 = LinearReg(Close,3) < Ref(LinearReg(Close,3),-1) AND
> LinRegSlope(Close,23) <= 0 AND Close > UpperLinRegChanVal;
>
> Filter = Cond1 OR Cond2;
>
> Buy = Cond1;
> Short = Cond2;
>
> ATR15 = ATR (15);
> EMA30 = EMA (V, 30);
> AddColumn (C, "Close");
> AddColumn( Buy, "Buy", 1, colorDefault, IIf( Cond1 == 1, colorGreen, Null )
> );
> AddColumn( Short, "Short", 1, colorDefault, IIf( Cond2 == 1, colorRed, Null
> ) );
> AddColumn (V, "Volume");
> AddColumn (ATR15, "Average True Range");
> AddColumn (EMA30, "30 Day Average Volume");
> //*
>
>
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>
>
>
>
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--
Cheers
Graham
http://e-wire.net.au/~eb_kavan/
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