Sorry made mistake
inTrade = iif(Flip(Buy,Sell),1,-1) 
  ;
-- 
Cheers
Graham
AB-Write >< Professional AFL Writing 
  Service
Yes, I write AFL code to your requirements
http://www.aflwriting.com
On 
  23/03/07, Graham <kavemanperth@gmail.com> 
  wrote:
> I think you will find this an easier solution
>
> 
  inTrade = Flip(Buy,Sell) - 1;
>
>
> --
> 
  Cheers
> Graham
> AB-Write >< Professional AFL Writing 
  Service
> Yes, I write AFL code to your requirements
> http://www.aflwriting.com
>
>
> 
  >
> >
> >
> >
> >
> >
> 
  >
> >
> > ----- Original Message -----
> > From: 
  Alain Baur
> > To: amibroker@xxxxxxxxxps.com
> 
  > Sent: Thursday, March 22, 2007 3:48 AM
> > Subject: [amibroker] 
  In Trade Index
> >
> >
> >
> >
> 
  >
> > Hi
> > I would like to create an index ( "InTrade") 
  which indicates if i am On
> the market or no.
> >
> > 
  This formula works well but only after the two first trades (Buy then 
  sell
> or sell then Buy)
> >
> >
> > 
  SetChartOptions(1,chartShowDates);
> >
> > 
  GraphXSpace = 10 ;
> >
> > Plot(Close, "C", colorBlack, 
  styleCandle);
> >
> > X = BarIndex();
> 
  >
> > MA10 = MA(C, 10) ;
> >
> > MA50 = MA(C, 
  50);
> >
> > Plot(MA10, "MA10", colorBlue, 
  styleLine);
> >
> > Plot(MA50, "MA50", colorRed, 
  styleLine);
> >
> > Buy = Cross(MA10, MA50);
> 
  >
> > Sell = Cross(MA50, MA10);
> >
> > BarBuy = 
  ValueWhen(Buy, X, 1);
> >
> > BarSell = ValueWhen(Sell, X, 
  1);
> >
> > PlotShapes(IIf(Buy, shapeUpArrow, 
  shapeNone), colorGreen, 0, L, -12);
> >
> > 
  PlotShapes(IIf(Sell, shapeDownArrow, shapeNone), colorRed, 0, H, 
  -12);
> >
> > intrade = IIf( BarBuy > BarSell , 1, 
  -1);
> >
> > Title = " " + Name() + " - " + Date() + " - 
  BarBuy = " + BarBuy + " -
> BarSell = " + BarSell
> >
> 
  > + " - Intrade = " + intrade + " " ;
> > Is it possible to write 
  an other formula which works since the beginning
> of the Array 
  ?
> >
> >
> > Thank's for your response
> 
  >
> >
> >
> >
> >
> > 
  ________________________________
>
> >
> 
  >
>
>