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This solves the problem: now it fires correctly
---8<----------------
pj_slow=Param("Pj_slow",21,10,40,1);
PjOsc=ProjOsc(pj_slow);
pj_trigger = Param("Pj_trig",3,2,7,1);
Pjsignal = EMA(PjOsc,pj_trigger);
Plot(PjOsc,"PjOsc",colorRed,1);
Plot(PjSignal,"Pjsignal",colorBlue,1);
Buyval = Param("Buyval",30,20,40,1);
Sellval = Param("Sellval",70,60,80,1);
Buy = Cross(PjOsc,Pjsignal) AND Ref(PjOsc,-1) < Buyval;
Sell = Cross(Pjsignal,PjOsc) AND Ref(PjOsc,-1) > Sellval;
PlotShapes( shapeSmallUpTriangle * Buy + shapeSmallDownTriangle *
Sell, IIf( Buy, colorGreen, colorRed ) );
GraphXSpace=10;
--8<------------------
--- In amibroker@xxxxxxxxxxxxxxx, "dalengo" <dalengo@xxxx> wrote:
> Hi,
> This is a simple test system using Projection Oscillator.
> It displays practically all signals correctly, but misses (??) one,
> most important BUY for YHOO on 12/18/2003, where there IS a
crossover
> between the indicator and its signal line in the region below 30,
> in anticipation of a major move up, but yet no Buy triangle shows
up.
> Can someone explain/correct this?
> Code is:
> ---------8<--cut and paste in IB window; together w/function
below --
> pj_slow=Param("Pj_slow",21,10,40,1);
> PjOsc=ProjOsc(pj_slow);
> pj_trigger = Param("Pj_trig",3,2,7,1);
> Pjsignal = EMA(PjOsc,pj_trigger);
> Plot(PjOsc,"PjOsc",colorRed,1);
> Plot(PjSignal,"Pjsignal",colorBlue,1);
> Buyval = Param("Buyval",30,25,40,1);
> Sellval = Param("Sellval",70,60,80,1);
> Buy = Cross(PjOsc,Pjsignal) AND PjOsc <= Buyval;
> Sell = Cross(Pjsignal,PjOsc) AND PjOsc > Sellval;
> PlotShapes( shapeSmallUpTriangle * Buy + shapeSmallDownTriangle *
> Sell, IIf( Buy, colorGreen, colorRed ) );
> GraphXSpace=10;
> -----8<---------------------------------------------------
> -Alex
>
> ---8<------------------------------------------------------
> > > > function ProjOsc(n) {
> > > >
> > > > // Slope of High {n period regression line of High)}
> > > > SlopeHigh = ((n * (Sum( Cum(1) * High, n))) - (Sum( Cum
(1),n)
> * (
> > > > Sum(High, n)))) / ((n * Sum( Cum(1) ^ 2 , n)) - (Sum(Cum
(1),n)
> ^
> > > > 2));
> > > >
> > > > //Slope of Low {n period regression line of Low}
> > > > SlopeLow = ((n * (Sum( Cum(1) * Low, n))) - (Sum( Cum(1), n)
*
> (
> > > > Sum(Low, n)))) / ((n * Sum( Cum(1)^ 2, n)) - ( Sum(Cum(1),n)
^
> > > > 2));
> > > >
> > > > //Upper Projection Band
> > > > UpProjBand = 0;
> > > > for (i=0; i<n-1; i++)
> > > > {
> > > > UpProjBand =
> > > > Max(Max(Ref(High,-i)+i*slopehigh,Ref(High,-i-1)+(i+1)
> > > *slopehigh),UpProjBand);
> > > > }
> > > >
> > > > //Lower Projection Band
> > > > LoProjBand = 10000;
> > > > for (i=0; i<n-1; i++)
> > > > {
> > > > LoProjBand =
> > > > Min(Min(Ref(Low,-i)+i*slopelow,Ref(Low,-i-1)+(i+1)
> > > *slopelow),LoProjBand);
> > > > }
> > > >
> > > > //Projection Oscillator
> > > > ProOsc = 100 * (Close - LoProjBand) / (UpProjBand -
> LoProjBand);
> > > >
> > > > return ProOsc;
> > > >
> > > > }
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