Displaying Babaloo Chapora Pastie For Amibroker (AFL)

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_SECTION_BEGIN("SAR");
acc=Param("Acceleration factor",0.02,0.01,0.05,0.01);
af_start=Param("Starting AF value",0.02,0.01,0.05,0.01);
af_max=Param("Maximum AF value",0.2,0.1,0.3,0.01);
Ct=Param("Crossover threshold in %",1,0,3,0.5);
Ct1=Ct/100;
 
IAF = acc; 
MaxAF = af_max;     // max acceleration
 
psar = Close;       // initialize
long = 1;        // assume long for initial conditions
af = af_start;   // starting value of the acelleration factor
ep = Low[ 0 ];   // init extreme point
hp = High [ 0 ];
lp = Low [ 0 ];
 
for( i = 2; i < BarCount; 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 ] * (1-Ct1) )
        {
            long = 0; reverse = 1; // reverse position to Short
            psar [ i ] =  hp;       // SAR is High point in prev trade
            lp = Low [ i ];
            af = af_start;
        }
    }
    else
    {
        if ( High [ i ] > psar [ i ] * (1+Ct1) )
        {
            long = 1; reverse = 1;        //reverse position to long
            psar [ i ] =  lp;
            hp = High [ i ];
            af = af_start;
        }
    }
 
    if ( reverse == 0 )
    {
        if ( long )
        {
            if ( High [ i ] > hp ) 
            {
                hp = High [ i ]; 
                af = af + IAF; 
                if( af > MaxAF ) af = MaxAF; 
            }
              
            if( Low[ i - 1 ] < psar[ i ] ) psar[ i ] = Low[ i - 1 ];
            if( Low[ i - 2 ] < psar[ i ] ) psar[ i ] = Low[ i - 2 ];
        }
       else
        {
            if ( Low [ i ] < lp )  
            { 
                lp = Low [ i ]; 
                af = af + IAF; 
                if( af > MaxAF ) af = MaxAF; 
            }   
                 
            if( High[ i - 1 ] > psar[ i ] ) psar[ i ] = High[ i - 1 ];
            if( High[ i - 2 ] > psar[ i ] ) psar[ i ] = High[ i - 2 ];
 
        }
    }
}
 
//Plot( Close, "Price", colorBlack, styleCandle );
Plot( psar, _DEFAULT_NAME(), ParamColor( "Color", colorRed ), styleDots | styleNoLine | styleThick );
_SECTION_END();
 
_SECTION_BEGIN("Price ADX");
function PercentR( periods )
{ return -100 * ( HHV( H, periods ) - C )/( HHV( H, periods ) - LLV( L, periods ) ); }
range = Param("Periods", 9, 2, 200, 1 );
 ADX(range);
 PDI(range) ;
 MDI(range);
SetChartOptions(0,chartShowArrows|chartShowDates);
_N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, Close %g (%.1f%%) Vol " +WriteVal( V, 1.0 ) +" {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 )) ));
Plot( C, "Close", IIf( PDI(range) > MDI(range), ParamColor("Up Color", colorBrightGreen ), ParamColor("Down Color", colorRed ) ), styleCandle | styleNoTitle | ParamStyle("Style") | GetPriceStyle() ); 
Bull_Trend=(PercentR( Param("Periods", 14, 2, 100 ) )> -20);
Bear_Trend=(PercentR( Param("Periods", 14, 2, 100 ) )< -80);
Ribbon_kol=IIf( Bull_Trend, colorGreen, IIf(Bear_Trend, colorRed,colorYellow)) ;
Plot(6, "", Ribbon_kol, styleOwnScale| styleArea| styleNoLabel,-0.5,100);
_SECTION_END();
 
_SECTION_BEGIN("DispMA");
P = ParamField("Field");
Type = ParamList("Type", "Simple,Exponential,Double Exponential,Tripple Exponential,Wilders,Weighted");
Periods = Param("Periods", 30, 2, 100 );
Displacement = Param("Displacement", 15, -50, 50 );
SL= (HHV(H,13)+LLV(L,13))/2;
TL= (HHV(H,9)+LLV(L,9))/2;
m = Ref((SL+TL)/2,-2);
if( Type == "Simple" )                  m = MA( P, Periods );
if( Type == "Exponential" )             m = EMA( P, Periods );
if( Type == "Double Exponential" )  m = DEMA( P, Periods );
if( Type == "Tripple Exponential" )     m = TEMA( P, Periods );
if( Type == "Wilders" )                 m = Wilders( P, Periods );
if( Type == "Weighted" )                m = WMA( P, Periods );
 
Plot( m, "", IIf( C > m, ParamColor("Up Color", colorGreen ), ParamColor("Down Color", colorRed ) ), styleLine|styleThick|styleNoTitle, 0, 0, Displacement );
_SECTION_END();
 
  /* **********************************
 
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, 
"\n" + "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), colorBlue, 0, Low, Offset=-15);
 
_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 ), "\n" + "BBTop" + _PARAM_VALUES(), Color, Style ); 
Plot( BBandBot( P, Periods, Width ), "\n" + "BBBot" + _PARAM_VALUES(), Color, Style ); 
_SECTION_END();
 
_SECTION_BEGIN("EMA1");
P = ParamField("Price field",-1);
Periods = Param("Periods", 15, 2, 200, 1, 10 );
Plot( EMA( P, Periods ), "\n" + _DEFAULT_NAME(), ParamColor( "Color", colorCycle ), ParamStyle("Style") ); 
_SECTION_END();
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Babaloo Chapora for Amibroker (AFL)
