Buy Above Sell Below Magic Line - Amibroker AFL Code

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_SECTION_BEGIN("Guppy Countback Line");

/* Stephane Carrasset's Countback Line (CBL) popularized by Daryl Guppy

Refer to amibroker posting 30th December 2004 */

nR=2;

Cbl[nR]=Null;

bCBL=False;

for( i=nR; i < BarCount; i++)

{

if( (Low[i-2]<Low[i-1]) && (Low[i-1]<Low[i]) )

{

Cbl[i] = Low[i-2];

bCBL = True;

}

else if (bCBL)

{

if (Low[i] < Cbl[i-1])

{

Cbl[i] = Cbl[i-1];

bCBL = False;

}

else

{

n = nR;

minval[i] = Low[i];

breakloop= False;

for (j = 1; NOT(breakloop) && j <= i; j++)

{

if (Low[i-j] < minval[i])

{

if (n>1)

{

minval[i] = Low[i-j];

n--;

}

else

{

Cbl[i] = Low[i-j];

breakloop=True;

}

}

}

if (Cbl[i] < Cbl[i-1])

Cbl[i] = Cbl[i-1];

}

}

else

{

Cbl[i] = Cbl[i-1];

}

if (Cbl[i]==0)

Cbl[i] = Cbl[i-1];

}

Plot(Cbl,"",colorGreen,1);

Plot(C,"",-1,64);

_SECTION_END();