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Cup Formation for Amibroker (AFL)

Rating:
2 / 5 (Votes 4)
Tags:
amibroker, pattern

Early detection of cup formations. Published in April edition of Stocks and Commodities

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Indicator / Formula

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Parameter = Param( "parameter", 1.5, 1, 10, 0.1 ); 

FilC = ( log( C ) ); 

eps = 0.0000000001; 
// basic Definitions 
semicupperiod = SelectedValue( Max( BarsSince( C >= SelectedValue( C * parameter ) ), 1 ) ) + 1; 

Ptop = SelectedValue( HHV( FilC, Semicupperiod ) ); 
Pbot = SelectedValue( LLV( FilC, Semicupperiod ) ); 
boxheight = SelectedValue( abs( Ptop - Pbot ) / 5 ); 
boxlength = SelectedValue( Max( int( semicupperiod / 5 ), 1 ) ); 

//   Grid Nodes 
bar = Cum( 1 ); 
b0 = SelectedValue( bar - semicupperiod + 1 ); 
b5 = SelectedValue( bar ); 
b1 = SelectedValue( Min( b0 + boxlength, b5 ) ); 
b2 = SelectedValue( Min( b1 + boxlength, b5 ) ); 
b3 = SelectedValue( Min( b2 + boxlength, b5 ) ); 
b4 = SelectedValue( Min( b3 + boxlength, b5 ) ); 
L2 = Pbot + 2 * boxheight; 
L3 = Pbot + 3 * boxheight; 

// Directional Strength 
Diff = FilC - Ref( FilC, -1 ); 
UpSum2 = Sum( Max( Diff, 0 ), 2 * boxlength ); 
DnSum2 = Sum( Max( -Diff, 0 ), 2 * boxlength ); 
DSX1 = abs( UpSum2 - DnSum2 ) / ( eps + UpSum2 + DnSum2 ) * 100; 
UpSum3 = Sum( Max( Diff, 0 ), 3 * boxlength ); 
DnSum3 = Sum( Max( -Diff, 0 ), 3 * boxlength ); 
DSX2 = abs( UpSum3 - DnSum3 ) / ( eps + UpSum3 + DnSum3 ) * 100; 

// Coditions 
isSemicup = ( semicupperiod >= 20 ) AND 
            ( Ref( DSX1, -( b5 - b2 ) ) > 25 ) AND 
            ( DSX2 < 25 ) AND 
            ( Cum( IIf( bar >= b2, FilC > L3, 0 ) ) == 0 ) AND 
            ( Cum( IIf( bar >= b4, FilC > L2, 0 ) ) == 0 ); 

LIS = SelectedValue( isSemicup ); 
Lastbar = SelectedValue( Cum( bar ) ); 


Line = LIS * ( ValueWhen( LIS * bar == b0, 1 ) * 
       ( ( exp( Ptop ) - exp( Pbot ) ) / 
         ( bar - b0 + 2 ) * 2 + 0.98 * exp( Pbot ) ) ); 

if( LIS ) Plot( Line , "IsSemiCupPlot", colorRed, styleThick ); 
Plot( C, Date() + " Close", ParamColor("Color", colorBlack ), styleBar ); 

Filter = isSemicup; 
AddColumn( semicupperiod, "Semicup period", 1.0 );

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