bullish percent index 2004.afl

一个更精度的平滑涵数, 可用于股票交易系统.用于Amibroker 平台

//------------------------------------------------------------------------------
//
//  Formula Name:    Bullish Percent Index 2004
//  Author/Uploader: Graham Kavanagh 
//  E-mail:          [e-mail]
//  Date/Time Added: 2004-07-20 19:53:56
//  Origin:          
//  Keywords:        Bullish Percent Index
//  Level:           semi-advanced
//  Flags:           indicator
//  Formula URL:     http://www.amibroker.com/library/formula.php?id=367
//  Details URL:     http://www.amibroker.com/library/detail.php?id=367
//
//------------------------------------------------------------------------------
//
//  Replaces the previous BPI I placed here
//
//  Creates a composite of the Bullish signals for a group of stocks. The file
//  here is 3 parts combined - Create composite - Plot line chart - Plot
//  P&F of BPI
//
//  Change the Box sizings to suit your market stocks.
//
//------------------------------------------------------------------------------

// 3 FILES ARE INCLUDED HERE
// SEPARATE AT THE CUT LINES


///////////////////////////////////////
// FILE 1 CREATE COMPOSITE
///////////////////////////////////////

// Bullish Percent Index
// Buy Signals generated via P&F 
// Graham Kavanagh  09 Jul 2004
// Select your group of stocks and run Scan in AA window


SetBarsRequired(10000,10000);


function ToBox( Price )
{
 Boxes = 
 Min( Price, 0.25 )/0.0625 + 
 Max( ( Min( Price, 1 )-0.25 ) ,0 )/0.125 + 
 Max( ( Min( Price, 5 )-1 ) ,0 )/0.25 + 
 Max( ( Min( Price, 20 )-5 ) ,0 )/0.5 + 
 Max( ( Min( Price, 100 )-20 ) ,0 )/1 + 
 Max( ( Min( Price, 200 )-100 ) ,0 )/2 + 
 Max( ( Min( Price, 500 )-200 ) ,0 )/4 + 
 Max( ( Min( Price, 1000 )-500 ) ,0 )/5 + 
 Max( ( Min( Price, 25000 )-1000 ) ,0 )/50 + 
 Max( ( Price-25000 ) ,0 )/500 ;
 
 return Boxes; 
}

// round boxes down for High and up for Low
Lx = ceil(ToBox(L));
Hx = floor(ToBox(H));

// set variable values for locating peak/troughs of columns
Bar = BarIndex();
BarDate = DateNum();
BarTurn = 0;
DateTurn = 0;
DateEnd = 0;
BarEnd = 0;
fall = 1;
rise = 0;

PFC[0] = Lx[0];

reverse = 3;
dirn = -1; // -1=down, 1=up

for( i = 1; i < BarCount; i++ )
{
 if( Lx[i]<=(PFC[i-1]-1) && V[i]>0 && dirn==-1)         //continue down
 {
  PFC[i] = Lx[i];
  DateEnd[i] = BarDate[i];
  BarEnd[i] = Bar[i];
  fall[i] = 1;
  rise[i] = 0;
 }
 else
 {
  if( Hx[i]>=(PFC[i-1]+Reverse) && Lx[i]>PFC[i-1] && V[i]>0 && dirn==-1)  //Change direction to up
  {
   dirn = 1;
   PFC[i] = Hx[i];
   BarTurn[i] = Bar[i];
   DateTurn[i] = BarDate[i];
   DateEnd[i] = BarDate[i];
   BarEnd[i] = Bar[i];
   fall[i] = 0;
   rise[i] = 1;
  }
  else
  {
   if( Hx[i]>=(PFC[i-1]+1) && V[i]>0 && dirn==1)         //Continue up
   {
    PFC[i] = Hx[i];
    DateEnd[i] = BarDate[i];
    BarEnd[i] = Bar[i];
    fall[i] = 0;
    rise[i] = 1;
   }
   else
   {
    if( Lx[i]<=(PFC[i-1]-Reverse) && Hx[i]<PFC[i-1] && V[i]>0 && dirn==1)   //Change direction to down
    {
     dirn = -1;
     PFC[i] = Lx[i];
     BarTurn[i] = Bar[i];
     DateTurn[i] = BarDate[i];
     DateEnd[i] = BarDate[i];
     BarEnd[i] = Bar[i];
     fall[i] = 1;
     rise[i] = 0;
    }
    else
    {
     PFC[i] = PFC[i-1];
     rise[i] = rise[i-1];
     fall[i] = fall[i-1];
    }
   }
  }
 }
}


//Convert boxes to prices for check plotting

b1=0 + 0.25 / 0.0625;
b2=b1 + (1-0.25) / 0.125;
b3=b2 + (5-1) / 0.25;
b4=b3 + (20-5) / 0.5;
b5=b4 + (100-20) / 1;
b6=b5 + (200-100) / 2;
b7=b6 + (500-200) / 4;
b8=b7 + (1000-500) / 5;
b9=b8 + (25000-100) / 50;


function ToPrice( Value )
{
 Price = 
 Min( Value, b1 ) * 0.0625 + 
 Min( Max( Value-b1, 0 ), b2-b1 ) * 0.125 + 
 Min( Max( Value-b2, 0 ), b3-b2 ) * 0.25  + 
 Min( Max( Value-b3, 0 ), b4-b3 ) * 0.5 + 
 Min( Max( Value-b4, 0 ), b5-b4 ) * 1 + 
 Min( Max( Value-b5, 0 ), b6-b5 ) * 2 + 
 Min( Max( Value-b6, 0 ), b7-b6 ) * 4 + 
 Min( Max( Value-b7, 0 ), b8-b7 ) * 5 + 
 Min( Max( Value-b8, 0 ), b9-b8 ) * 50 + 
 Max( Value-b9, 0 ) * 500 ;

  return Price; 
}

bullsig = PFC > ValueWhen( rise AND Ref(fall,1), PFC ) AND rise;

Buy=1;
AddToComposite( bullsig, "~BullPercent", "C" );
AddToComposite( 1, "~BullPercent", "V" );



//=================================%<-----------------------------------------



///////////////////////////////////////
// FILE 2 PLOT LINE CHART
///////////////////////////////////////

// Bullish Percent Index Chart - Line
// Graham Kavanagh  09 Jul 2004

BPI = Foreign( "~BullPercent", "C" )/Foreign( "~BullPercent", "V" )*100; 

Plot( BPI, "BPI", colorRed, styleLine );

GraphXSpace=5;

Title = Name() + " " + Date() + ": BPI Line Chart, BPI = "+ WriteVal(BPI,1) + "% : Number of Stocks = " + Foreign( "~BullPercent", "V" ) + " : Number of Bull Signals = " + Foreign( "~BullPercent", "C" );

Plot(30, "", colorGreen, styleLine);
Plot(70, "", colorGreen, styleLine);
Plot(100, "", colorWhite, styleNoLine);
Plot(0, "", colorWhite, styleNoLine);



//=================================%<-----------------------------------------



///////////////////////////////////////
// FILE 2 PLOT POINT & FIGURE CHART
///////////////////////////////////////

// Bullish Percent Index Chart - P&F
// Graham Kavanagh  09 Jul 2004


SetBarsRequired(100000,100000);

box = 2;
reverse = 3;

CX = Foreign( "~BullPercent", "C" )/Foreign( "~BullPercent", "V" )*100;
CF = ceil(Cx/box);
CR = floor(Cx/box);

Bar = BarIndex();
BarDate = DateNum();
BarTurn = 0;
DateTurn = 0;
DateEnd = 0;
BarEnd = 0;

// initialize first element
j = 0;
PFC[j] = CF[0];
PFO[j] = CF[0] + 1;

down = 1;  // By default the first bar is a down bar.
up = 0;

// perform the loop that produces PF Chart
for( i = 1; i < BarCount; i++ )
{
 if( CX[i] <= PFC[j] - 1 && down)   //continue down
 {
  PFC[j] = CF[i];
  PFO[j] = CF[i] + 1;
  DateEnd[j] = BarDate[i];
  BarEnd[j] = Bar[i];
 }
 else
 {
  if( CX[i] >= PFC[j] + Reverse && down)  //Change direction to up
  {
   j++;
   up = 1;
   down = 0;
   PFC[j] = CR[i];
   PFO[j] = CR[i] - 1;
   BarTurn[j] = Bar[i];
   DateTurn[j] = BarDate[i];
   DateEnd[j] = BarDate[i];
   BarEnd[j] = Bar[i];
  }
  else
  {
   if( CX[i] >= PFC[j] + 1 && up)   //Continue up
   {
    PFC[j] = CR[i];
    PFO[j] = CR[i] - 1;
    DateEnd[j] = BarDate[i];
    BarEnd[j] = Bar[i];
   }
   else
   {
    if( CX[i] <= PFC[j] - Reverse && up)   //Change direction to down
    {
     j++;
     up = 0;
     down = 1;
     PFC[j] = CR[i];
     PFO[j] = CR[i] + 1;
     BarTurn[j] = Bar[i];
     DateTurn[j] = BarDate[i];
     DateEnd[j] = BarDate[i];
     BarEnd[j] = Bar[i];
    }
   }
  }
 }
}

delta = BarCount-1 - j;

BarTurns = Ref( BarTurn, -delta);
DateTurns = Ref( DateTurn, -delta);
BarEnds = Ref( BarEnd, -delta);
DateEnds = Ref( DateEnd, -delta);

PFO = Ref( PFO, -delta );
PFC = Ref( PFC, -delta );

Rise = PFC>PFO;
Fall = PFC<PFO;

H = IIf( Ref(Rise, -1), Ref( HHV(PFC, 1), -1 ) - 1, Max(PFO, PFC) ) * box + box/2;
L = IIf( Ref(Fall, -1), Ref( LLV(PFC, 1), -1 ) + 1, Min(PFO, PFC) ) * box - box/2;
O = IIf( Ref(Rise, -1), Ref( HHV(PFC, 1), -1 ) - 1, IIf( Ref(Fall, -1), Ref( LLV(PFC, 1), -1 )+ 1, PFO ) ) * box;

// the difference between Open AND Close is set to box size
// the sign decides if X or O are plotted

C = O + box * IIf( Rise, 1, -1 );

Top = H - box/2;
Bot = L + box/2;

Title = Name() + " " + Date() + ": BPI PnF Chart, H: " + top + ", L: " + bot + ", Box " + box + ", Reversal " + reverse + ": Number of Stocks = " + Foreign( "~BullPercent", "V" ) + " : Number of Bull Signals = " + Foreign( "~BullPercent", "C" );

GraphXSpace=5;

Plot(C, "BPI", IIf( Rise, colorBlue, colorRed ), stylePointAndFigure);

Plot(30-box/2, "", colorGreen, styleLine);
Plot(70+box/2, "", colorGreen, styleLine);

Plot(100, "", colorWhite, styleNoLine);
Plot(0, "", colorWhite, styleNoLine);

//--Indicator-End--