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Help....I and trying to modify the formula below.
What I want to do, is run a scan that shows the buy and sell arrows.
However, when I run the scan, the AA window shows only a few buy and
sells, yet the indicator window shows all the buy and sell arrows.
What am I doing wrong?
TIA,
Cordell
/* JOHN CLAYBURG BASED SUPPORT/RESISTANCE LINES
Coded by GBS May 2004
Modified by Tomasz Janeczko (AmiBroker.com) on 2005-Mar-07
/* CATEGORY 3 SUPPORT BREAKOUT TRIGGER FOR SHORTS: */
/* PARAMETERS */
ColLSC = ParamColor("SU Color",colorOrange);
ColLRC = ParamColor("RE Color",colorBlue);
LL_3_6 = Ref(L,-6) > Ref(L,-3);
LL_3_5 = Ref(L,-5) > Ref(L,-3);
LL_3_4 = Ref(L,-4) > Ref(L,-3);
LL_3_2 = Ref(L,-2) > Ref(L,-3);
LL_3_1 = Ref(L,-1) > Ref(L,-3);
LL_3_0 = L > Ref(L,-3);
Cat3Sup = LL_3_6 AND LL_3_5 AND LL_3_4 AND LL_3_2 AND LL_3_1 AND
LL_3_0;
/* SUPPORT LINE ("SC") */
y0=ValueWhen(Cat3Sup,Ref(L,-3),2);
y1=ValueWhen(Cat3Sup,Ref(L,-3),1);
x0=ValueWhen(Cat3Sup,BarIndex(),2)-3;
x1=ValueWhen(Cat3Sup,BarIndex(),1)-3;
// looking into the future here, but it is
// only applied to historical plots to determine
// the length of the extension.
xsf=ValueWhen(Cat3Sup,BarIndex(),0)-3;
/* CATEGORY 3 RESISTANCE BREAKOUT TRIGGER FOR LONGS: */
HH_3_6 = Ref(H,-6) < Ref(H,-3);
HH_3_5 = Ref(H,-5) < Ref(H,-3);
HH_3_4 = Ref(H,-4) < Ref(H,-3);
HH_3_2 = Ref(H,-2) < Ref(H,-3);
HH_3_1 = Ref(H,-1) < Ref(H,-3);
HH_3_0 = H < Ref(H,-3);
Cat3Res = HH_3_6 AND HH_3_5 AND HH_3_4 AND HH_3_2 AND HH_3_1 AND
HH_3_0;
y2=ValueWhen(Cat3Res,Ref(H,-3),2);
y3=ValueWhen(Cat3Res,Ref(H,-3),1);
x2=ValueWhen(Cat3Res,BarIndex(),2)-3;
x3=ValueWhen(Cat3Res,BarIndex(),1)-3;
// another look into the future.
xrf=ValueWhen(Cat3Res,BarIndex(),0)-3;
Plot(C,"C", colorBlack, styleCandle);
extendedSup=0;
extendedRes=0;
NullY0=IsNull(y0);
NullY2=IsNull(y2);
Buy = Sell = Short = Cover = 0; // FIX: INITIALIZE !!!!
GraphXSpace = 3;
for ( i = BarCount -1 ; i > 7 ; i-- )
{
if ( !NullY0[i] ){ // only plot lines when enough datapoints avail.
if ( x0[i] != x0[i-1] ) {
ms = (y1[i] - y0[i])/(x1[i] - x0[i]); // simple slope of support
if ( NOT extendedSup ) { // Haven't extended one yet
extendedSup = 1;
Line1 = LineArray( x0[i], y0[i], x1[i] + 3, y1[i] + (3 *
ms),0,True);
Line2 = LineArray( x1[i] + 3, y1[i] + (3 * ms), x1[i]
+4,y1 [i] + (4 * ms), 1,True);
Sell=Cross(Line2,C);
PlotShapes(IIf (Sell,shapeHollowDownArrow,shapeNone),colorRed,0,H,-10);
} else { // old Cat3Sup lines, use 'look ahead' extensions
Line3 = LineArray( x0[i], y0[i], x1[i] + 3, y1[i] + (3
*ms),0,True);
Line4 = LineArray( x1[i] + 3, y1[i] + (3 * ms), xsf[i] +
3, y1[i] + ms * (xsf[i] - x1[i] + 3), 0,True);
Sell=Cross(Line4,C);
PlotShapes(IIf
(Sell,shapeHollowDownArrow,shapeNone),colorRed,0,H,-10);
}
}
}
if ( !NullY2[i] ){ // only plot lines when enough datapoints avail.
if ( x2[i] != x2[i-1] ) {
mr = (y3[i] - y2[i])/(x3[i] - x2[i]); // simple slope of
resistance
if ( NOT extendedRes ) { // Haven't extended one yet
extendedRes = 1;
Line5= LineArray( x2[i], y2[i], x3[i] + 3, y3[i] + (3
*mr),0,True);
Line6 = LineArray( x3[i] + 3, y3[i] + (3 * mr), x3[i]
+4,y3 [i] + (4 * mr), 1,True);
Buy=Cross(C,Line6);
PlotShapes(IIf
(Buy,shapeUpArrow,shapeNone),colorBrightGreen,0,L,-10);
} else { // old Cat3Sup lines, use 'look ahead' extensions
Line7= LineArray( x2[i], y2[i], x3[i] + 3, y3[i] + (3 *
mr),0,True);
Line8 = LineArray( x3[i] + 3, y3[i] + (3 * mr), xrf[i] +
3, y3[i] + mr * (xrf[i] - x3[i] + 3), 0,True);
Buy=Cross(C,Line8);
PlotShapes(IIf
(Buy,shapeUpArrow,shapeNone),colorBrightGreen,0,L,-10);
}
}
}
}
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