Perfect Entry Exit Accurate Bollinger Bands

Perfect Entry Exit Accurate Bollinger Bands


Perfect Entry Exit Accurate Bollinger Bands

//www.aflcode.com
SetChartOptions(0,chartShowArrows|chartShowDates);
_N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, Close %g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 ) ) ));
Plot( C, "Close", ParamColor("Color", colorBlack ), styleNoTitle | ParamStyle("Style") | GetPriceStyle() );

_SECTION_BEGIN("Volume");
Plot( Volume, _DEFAULT_NAME(), ParamColor("Color", colorBlueGrey ), ParamStyle( "Style", styleHistogram | styleOwnScale | styleThick, maskHistogram  ), 2 );
_SECTION_END();

_SECTION_BEGIN("Bollinger Bands");
P = ParamField("Price field",-1);
Periods = Param("Periods", 15, 2, 100, 1 );
Width = Param("Width", 2, 0, 10, 0.05 );
Color = ParamColor("Color", colorCycle );
Style = ParamStyle("Style");
Plot( BBandTop( P, Periods, Width ), "BBTop" + _PARAM_VALUES(), Color, Style ); 
Plot( BBandBot( P, Periods, Width ), "BBBot" + _PARAM_VALUES(), Color, Style ); 
_SECTION_END();

_SECTION_BEGIN("Parabolic SAR in JScript");

/**********BEGIN Parabolic SAR Indicator****************/

EnableScript ( "jscript" );
psar = Low;

<%
AF = 0.02;                          //acceleration factor
Max = 0.2;                          //max acceleration

Close = VBArray ( AFL ( "close" ) ).toArray();
High   = VBArray ( AFL ( "high" ) ).toArray();
Low    = VBArray ( AFL ( "low" ) ).toArray();
psar  =  VBArray ( AFL ( "psar" ) ).toArray();

psar [ 0 ] = Close [ 0 ];           //initialize
long = 1;                           //assume long for initial conditions
af = AF;                            //init acelleration factor
ep = Low[ 0 ];                      //init extreme point
hp = High [ 0 ];
lp = Low [ 0 ];

for ( i=2; i<Close.length; i++ )
{
     if ( long )
     {
             psar [ i ] = psar [ i-1 ] + af * ( hp - psar [ i-1 ] );
     }
     else
     {
             psar [ i ] = psar [ i-1 ] + af * ( lp - psar [ i-1 ] );
     }

     reverse =  0;
     //check for reversal
     if ( long )
     {
         if ( Low [ i ] < psar [ i ]  )
         {
              long = 0;  reverse = 1;            //reverse position to short
              psar [ i ] =  hp;                  //sar is high point in prev trade
              lp = Low [ i ];
              af = AF;
         }
     }
     else
     {
         if ( High [ i ] > psar [ i ]  )
         {
              long = 1;    reverse = 1;        //reverse position to long
              psar [ i ] =  lp;
              hp = High [ i ];
              af = AF;
         }
     }

     if ( reverse == 0 )
     {
         if ( long )
         {
             if ( High [ i ] > hp ) { hp = High [ i ]; af += AF; af = Math.min ( af, Max ); }
             psar [ i ] = Math.min ( psar [ i ], Low [ i - 1 ], Low[ i-2 ] );
         }
         else
         {
             if ( Low [ i ] < lp )  { lp = Low [ i ]; af = af + AF; af = Math.min ( af, Max ); }
             psar [ i ] = Math.max ( psar [ i ], High [ i - 1 ], High[ i-2 ] );
         }
     }
}

AFL.Var ( "psar" ) = psar;
%>

Graph0 = Close;
Graph0Style = 64 +32 ;
//graph0Style = 128 +32 ;
Graph0BarColor=1;
Graph1 = psar;
Graph1Style = 8 + 16 + 32;
Graph1Color = 8;



Title=Name() + " - sar = "+WriteVal(psar);
/**********END Parabolic SAR Indicator****************/
_SECTION_END();

_SECTION_BEGIN("Pivot Finder");
//
//  /* **********************************
//
//  Code to automatically identify pivots
//
//  ********************************** */
//
//  // -- what will be our lookback range for the hh and ll?
//
//  farback=Param("How Far back to go",100,50,5000,10);
//
//  nBars = Param("Number of bars", 12, 5, 40);
//
//  // -- Title.
//
//  Title = Name() + " (" + StrLeft(FullName(), 15) + ") O: " + Open + ",
//
//  H: " + High + ", L: " + Low + ", C: " + Close;
//
//  // -- Plot basic candle chart
//
//  PlotOHLC(Open, High, Low, Close,
//
//  "BIdx = " + BarIndex() +
//
//  "\n" + "O = " + O + "\n"+"H = "+ H + "\n"+"L = " + L
//
//  + "\n"+"C ",
//
//  colorBlack, styleCandle);
//
//  GraphXSpace=7;
//
//  // -- Create 0-initialized arrays the size of barcount
//
//  aHPivs = H - H;
//
//  aLPivs = L - L;
//
//  // -- More for future use, not necessary for basic plotting
//
//  aHPivHighs = H - H;
//
//  aLPivLows = L - L;
//
//  aHPivIdxs = H - H;
//
//  aLPivIdxs = L - L;
//
//  nHPivs = 0;
//
//  nLPivs = 0;
//
//  lastHPIdx = 0;
//
//  lastLPIdx = 0;
//
//  lastHPH = 0;
//
//  lastLPL = 0;
//
//  curPivBarIdx = 0;
//
//  // -- looking back from the current bar, how many bars
//
//  // back were the hhv and llv values of the previous
//
//  // n bars, etc.?
//
//  aHHVBars = HHVBars(H, nBars);
//
//  aLLVBars = LLVBars(L, nBars);
//
//  aHHV = HHV(H, nBars);
//
//  aLLV = LLV(L, nBars);
//
//  // -- Would like to set this up so pivots are calculated back from
//
//  // last visible bar to make it easy to "go back" and see the pivots
//
//  // this code would find. However, the first instance of
//
//  // _Trace output will show a value of 0
//
//  aVisBars = Status("barvisible");
//
//  nLastVisBar = LastValue(Highest(IIf(aVisBars, BarIndex(), 0)));
//
//  _TRACE("Last visible bar: " + nLastVisBar);
//
//  // -- Initialize value of curTrend
//
//  curBar = (BarCount-1);
//
//  curTrend = "";
//
//  if (aLLVBars[curBar] <
//
//  aHHVBars[curBar]) {
//
//  curTrend = "D";
//
//  }
//
//  else {
//
//  curTrend = "U";
//
//  }
//
//  // -- Loop through bars. Search for
//
//  // entirely array-based approach
//
//  // in future version
//
//  for (i=0; i<farback; i++) {
//
//  curBar = (BarCount - 1) - i;
//
//  // -- Have we identified a pivot? If trend is down...
//
//  if (aLLVBars[curBar] < aHHVBars[curBar]) {
//
//  // ... and had been up, this is a trend change
//
//  if (curTrend == "U") {
//
//  curTrend = "D";
//
//  // -- Capture pivot information
//
//  curPivBarIdx = curBar - aLLVBars[curBar];
//
//  aLPivs[curPivBarIdx] = 1;
//
//  aLPivLows[nLPivs] = L[curPivBarIdx];
//
//  aLPivIdxs[nLPivs] = curPivBarIdx;
//
//  nLPivs++;
//
//  }
//
//  // -- or current trend is up
//
//  } else {
//
//  if (curTrend == "D") {
//
//  curTrend = "U";
//
//  curPivBarIdx = curBar - aHHVBars[curBar];
//
//  aHPivs[curPivBarIdx] = 1;
//
//  aHPivHighs[nHPivs] = H[curPivBarIdx];
//
//  aHPivIdxs[nHPivs] = curPivBarIdx;
//
//  nHPivs++;
//
//  }
//
//  // -- If curTrend is up...else...
//
//  }
//
//  // -- loop through bars
//
//  }
//
//  // -- Basic attempt to add a pivot this logic may have missed
//
//  // -- OK, now I want to look at last two pivots. If the most
//
//  // recent low pivot is after the last high, I could
//
//  // still have a high pivot that I didn't catch
//
//  // -- Start at last bar
//
//  curBar = (BarCount-1);
//
//  candIdx = 0;
//
//  candPrc = 0;
//
//  lastLPIdx = aLPivIdxs[0];
//
//  lastLPL = aLPivLows[0];
//
//  lastHPIdx = aHPivIdxs[0];
//
//  lastHPH = aHPivHighs[0];
//
//  if (lastLPIdx > lastHPIdx) {
//
//  // -- Bar and price info for candidate pivot
//
//  candIdx = curBar - aHHVBars[curBar];
//
//  candPrc = aHHV[curBar];
//
//  if (
//
//  lastHPH < candPrc AND
//
//  candIdx > lastLPIdx AND
//
//  candIdx < curBar) {
//
//  // -- OK, we'll add this as a pivot...
//
//  aHPivs[candIdx] = 1;
//
//  // ...and then rearrange elements in the
//
//  // pivot information arrays
//
//  for (j=0; j<nHPivs; j++) {
//
//  aHPivHighs[nHPivs-j] = aHPivHighs[nHPivs-
//
//  (j+1)];
//
//  aHPivIdxs[nHPivs-j] = aHPivIdxs[nHPivs-(j+1)];
//
//  }
//
//  aHPivHighs[0] = candPrc ;
//
//  aHPivIdxs[0] = candIdx;
//
//  nHPivs++;
//
//  }
//
//  } else {
//
//  // -- Bar and price info for candidate pivot
//
//  candIdx = curBar - aLLVBars[curBar];
//
//  candPrc = aLLV[curBar];
//
//  if (
//
//  lastLPL > candPrc AND
//
//  candIdx > lastHPIdx AND
//
//  candIdx < curBar) {
//
//  // -- OK, we'll add this as a pivot...
//
//  aLPivs[candIdx] = 1;
//
//  // ...and then rearrange elements in the
//
//  // pivot information arrays
//
//  for (j=0; j<nLPivs; j++) {
//
//  aLPivLows[nLPivs-j] = aLPivLows[nLPivs-(j+1)];
//
//  aLPivIdxs[nLPivs-j] = aLPivIdxs[nLPivs-(j+1)];
//
//  }
//
//  aLPivLows[0] = candPrc;
//
//  aLPivIdxs[0] = candIdx;
//
//  nLPivs++;
//
//  }
//
//  }
//
//  // -- Dump inventory of high pivots for debugging
//
//  /*
//
//  for (k=0; k<nHPivs; k++) {
//
//  _TRACE("High pivot no. " + k
//
//  + " at barindex: " + aHPivIdxs[k] + ", "
//
//  + WriteVal(ValueWhen(BarIndex()==aHPivIdxs[k],
//
//  DateTime(), 1), formatDateTime)
//
//  + ", " + aHPivHighs[k]);
//
//  }
//
//  */
//
//  // -- OK, let's plot the pivots using arrows
//
//  PlotShapes(
//
//  IIf(aHPivs==1, shapeDownArrow, shapeNone), colorRed, 0,
//
//  High, Offset=-15);
//
//  PlotShapes(
//
//  IIf(aLPivs==1, shapeUpArrow , shapeNone), colorGreen, 0,
//
//  Low, Offset=-15);
//
//------------------------------------------------------------------------------

  /* **********************************

Code to automatically identify pivots

********************************** */

// -- what will be our lookback range for the hh and ll?
farback=Param("How Far back to go",100,50,5000,10);
nBars = Param("Number of bars", 12, 5, 40);

// -- Title.

Title = Name() + " (" + StrLeft(FullName(), 15) + ") O: " + Open + ", 

H: " + High + ", L: " + Low + ", C: " + Close;

// -- Plot basic candle chart

PlotOHLC(Open, High, Low, Close, 

"BIdx = " + BarIndex() + 

"\n" + "O = " + O + "\n"+"H = "+ H + "\n"+"L = " + L 

+ "\n"+"C ",

colorBlack, styleCandle); 

GraphXSpace=7;

// -- Create 0-initialized arrays the size of barcount

aHPivs = H - H;

aLPivs = L - L;

// -- More for future use, not necessary for basic plotting

aHPivHighs = H - H;

aLPivLows = L - L;

aHPivIdxs = H - H;

aLPivIdxs = L - L;

nHPivs = 0;

nLPivs = 0;

lastHPIdx = 0;

lastLPIdx = 0;

lastHPH = 0;

lastLPL = 0;

curPivBarIdx = 0;

// -- looking back from the current bar, how many bars 

// back were the hhv and llv values of the previous 

// n bars, etc.?

aHHVBars = HHVBars(H, nBars);

aLLVBars = LLVBars(L, nBars);

aHHV = HHV(H, nBars);

aLLV = LLV(L, nBars);

// -- Would like to set this up so pivots are calculated back from

// last visible bar to make it easy to "go back" and see the pivots

// this code would find. However, the first instance of 

// _Trace output will show a value of 0

aVisBars = Status("barvisible");

nLastVisBar = LastValue(Highest(IIf(aVisBars, BarIndex(), 0)));

_TRACE("Last visible bar: " + nLastVisBar);

// -- Initialize value of curTrend

curBar = (BarCount-1);

curTrend = "";

if (aLLVBars[curBar] < 

aHHVBars[curBar]) {

curTrend = "D";

}

else {

curTrend = "U";

}

// -- Loop through bars. Search for 

// entirely array-based approach

// in future version

for (i=0; i<farback; i++) {

curBar = (BarCount - 1) - i;

// -- Have we identified a pivot? If trend is down...

if (aLLVBars[curBar] < aHHVBars[curBar]) {

// ... and had been up, this is a trend change

if (curTrend == "U") {

curTrend = "D";

// -- Capture pivot information

curPivBarIdx = curBar - aLLVBars[curBar];

aLPivs[curPivBarIdx] = 1;

aLPivLows[nLPivs] = L[curPivBarIdx];

aLPivIdxs[nLPivs] = curPivBarIdx;

nLPivs++;

}

// -- or current trend is up

} else {

if (curTrend == "D") {

curTrend = "U";

curPivBarIdx = curBar - aHHVBars[curBar];

aHPivs[curPivBarIdx] = 1;

aHPivHighs[nHPivs] = H[curPivBarIdx];

aHPivIdxs[nHPivs] = curPivBarIdx;

nHPivs++;

}

// -- If curTrend is up...else...

} 

// -- loop through bars

} 

// -- Basic attempt to add a pivot this logic may have missed

// -- OK, now I want to look at last two pivots. If the most 

// recent low pivot is after the last high, I could

// still have a high pivot that I didn't catch

// -- Start at last bar

curBar = (BarCount-1);

candIdx = 0;

candPrc = 0;

lastLPIdx = aLPivIdxs[0];

lastLPL = aLPivLows[0];

lastHPIdx = aHPivIdxs[0];

lastHPH = aHPivHighs[0];

if (lastLPIdx > lastHPIdx) {

// -- Bar and price info for candidate pivot

candIdx = curBar - aHHVBars[curBar];

candPrc = aHHV[curBar]; 

if (

lastHPH < candPrc AND

candIdx > lastLPIdx AND

candIdx < curBar) {


// -- OK, we'll add this as a pivot...

aHPivs[candIdx] = 1;

// ...and then rearrange elements in the 

// pivot information arrays

for (j=0; j<nHPivs; j++) {

aHPivHighs[nHPivs-j] = aHPivHighs[nHPivs-

(j+1)];

aHPivIdxs[nHPivs-j] = aHPivIdxs[nHPivs-(j+1)];

}

aHPivHighs[0] = candPrc ;

aHPivIdxs[0] = candIdx;

nHPivs++;

} 

} else {


// -- Bar and price info for candidate pivot

candIdx = curBar - aLLVBars[curBar];

candPrc = aLLV[curBar]; 

if (

lastLPL > candPrc AND

candIdx > lastHPIdx AND

candIdx < curBar) {


// -- OK, we'll add this as a pivot...

aLPivs[candIdx] = 1;

// ...and then rearrange elements in the 

// pivot information arrays

for (j=0; j<nLPivs; j++) {

aLPivLows[nLPivs-j] = aLPivLows[nLPivs-(j+1)];

aLPivIdxs[nLPivs-j] = aLPivIdxs[nLPivs-(j+1)];

}

aLPivLows[0] = candPrc;

aLPivIdxs[0] = candIdx;

nLPivs++;

}

}

// -- Dump inventory of high pivots for debugging

/*

for (k=0; k<nHPivs; k++) {

_TRACE("High pivot no. " + k

+ " at barindex: " + aHPivIdxs[k] + ", " 

+ WriteVal(ValueWhen(BarIndex()==aHPivIdxs[k], 

DateTime(), 1), formatDateTime)

+ ", " + aHPivHighs[k]);

}

*/

// -- OK, let's plot the pivots using arrows

PlotShapes(

IIf(aHPivs==1, shapeDownArrow, shapeNone), colorRed, 0,

High, Offset=-15);

PlotShapes(

IIf(aLPivs==1, shapeUpArrow , shapeNone), colorGreen, 0, 

Low, Offset=-15);
 
_SECTION_END();

_SECTION_BEGIN("Pivots for Intraday Forex Charts");

/*======================================================
  FOREX INTRADAY HEIKIN ASHI + PIVOT POINTS
  ======================================================*/

//---- heikin ashi
HaClose = (O+H+L+C)/4; 
HaOpen = AMA( Ref( HaClose, -1 ), 0.5 ); 
HaHigh = Max( H, Max( HaClose, HaOpen ) ); 
HaLow = Min( L, Min( HaClose, HaOpen ) ); 
xDiff = (HaHigh - Halow) * IIf(StrFind(Name(),"JPY"),100,10000);
barcolor = IIf(HaClose >= HaOpen,colorGreen,colorRed);
PlotOHLC( HaOpen, HaHigh, HaLow, HaClose, "", barcolor, styleCandle ); 
// Plot(EMA(HaClose,9),"",colorWhite, styleLine);
// Plot(EMA(HaClose,18),"",colorBlack, styleLine);

//---- pivot points
DayH = TimeFrameGetPrice("H", inDaily, -1);  // yesterdays high
DayL = TimeFrameGetPrice("L", inDaily, -1);  //    low
DayC = TimeFrameGetPrice("C", inDaily, -1);  //    close
DayO = TimeFrameGetPrice("O", inDaily);   // current day open

// woodies FIB pivots
if ( False )
{
R = DayH - DayL;   // range
PP = (DayH + DayL + DayO + DayO) / 4 ;
R1 = PP + (R * 0.38);
R2 = PP + (R * 0.62);
S1 = PP - (R * 0.38);
S2 = PP - (R * 0.62);
}

// woodies pivots
if ( True )
{
PP = (DayH + DayL + DayO + DayO) / 4 ;
R1  =  (2 * PP) - DayL;
S1  =  (2 * PP) - DayH;
R2  =  PP + (DayH - DayL);
S2  =  PP - (DayH - DayL);
}

// regular pivots
if ( False )
{
PP = (DayL + DayH + DayC)/3 ;
R1  =  (2 * PP) - DayL;
S1  =  (2 * PP)  - DayH;
R2  =  (PP - S1) + R1;
S2  =  PP - (R1 - S1);
}

Plot(R1, "",colorWhite,styleDots+styleNoLine+styleNoLabel);
Plot(S1, "",colorDarkBlue,styleDots+styleNoLine+styleNoLabel);
Plot(R2, "R2",colorWhite,styleDots+styleNoLine+styleNoLabel);
Plot(S2, "S2",colorDarkBlue,styleDots+styleNoLine+styleNoLabel);
Plot(PP, "",colorYellow,styleLine+styleNoLabel);
//----
Title = Name()+" Heikin Ashi "+Date();
_SECTION_END();
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