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Hi,
Taking a quick skim of your code, looks like you've actually got several errors in there that need fixing first.
Specifically; "=" is assignment (as in store the value from the right side into the variable on the left side), whereas "==" is an equivalence test (as in a boolean test of whether the left side holds the same value as the right side).
So, all your IIf statements that are using "=" need to be converted to use "==". Same for all your BarsSince calls.
Then, to set your Buy/Sell logic, use the equivalence operator again.
e.g. assuming TD3 holds your signals:
Buy = (TD3 == 1);
Sell = (TD3 == -1);
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "Tim" <timkthung@xxx> wrote:
>
> Dear All,
>
> I am new to AB. Would someone please show me how to add the code for a Buy or Sell signal based on the value of 1 or -1 in following formula.
>
> Thanks in advance.
>
> Tim
>
>
> //Dunn-Type1
> //==========
>
> TD1 = IIf( BarsSince( H > Ref( H, -1 ) AND L > Ref( L, -1 ) ) <
> BarsSince( L < Ref( L, -1 ) AND H < Ref( H, -1 ) ), 1, -1 );
>
> //Dunn-Type2
> //==========
>
> TD2 = IIf( BarsSince( ( H > Ref( H, -1 ) AND L > Ref( L, -1 ) ) AND
> ( Ref( H, -1 ) > Ref( H, -2 ) AND Ref( L, -1 ) > Ref( L, -2 ) ) ) <
> BarsSince( ( L < Ref( L, -1 ) AND H < Ref( H, -1 ) ) AND
> ( Ref( L, -1 ) < Ref( L, -2 ) AND Ref( H, -1 ) < Ref( H, -2 ) ) ), 1, -1 );
>
> // Ask to use 1 Day OR 2 Day Swing type}
> St = Param( "Short Term Swing Type, 1 or 2 ?", 2, 1, 2, 1 );
>
> //{Call Swing Type Formula}
> Sd = IIf( St == 1, TD1, TD2 );
>
> //{Number Of Periods Since Swing Started Up}
> Hc = BarsSince( SD = -1 );
>
> //{Number Of Periods Since Swing Started Down}
> Lc = BarsSince( SD = 1 );
>
> //{Find Highest Value Of Up Swing}
> Hv = IIf( Hc > Lc AND H > Ref( H, -1 ), HighestSince( Hc = 1, H, 1 ) , 0 );
>
> //{Find Lowest Value Of Down Swing}
> Lv = IIf( Hc < Lc AND L < Ref( L, -1 ), LowestSince( Lc = 1, L, 1 ) , 0 );
>
> //{Find The Low Of The Highest High}
> Hlv = ValueWhen( H = Hv, L, 1 ) ;
>
> //{Find The High Of The Lowest Low}
> Lhv = ValueWhen( L = Lv, H, 1 ) ;
>
> //{Calculate AND Plot Trend Direction,
> //Note: 1= Uptrend,
> //-1= Downtrend}
>
> TD3 = IIf( Sd = 1 AND H > Lhv, 1, IIf( Sd = -1 AND L < Hlv, -1, 0 ) );
> TD4 = ValueWhen( TD2 != 0, TD2, 1 );
>
------------------------------------
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