BOLLINGER BAND AND CROSS OVER SYSTEM for Amibroker (AFL)

_SECTION_BEGIN(" Bollinger Bands with cross over and tweaked bar code");
P = ParamField("Price field",-1);
Period = Param("Short Periods", 20, 15, 30, 1 );
Width = Param("Short Width", 2, 1, 10, 1 );

TopCond=BBandTop( P, Period, Width )>Ref(BBandTop( P, Period, Width ),-1);
MidCond=MA(C,Period)>Ref(MA(C,Period),-1);
BotCond=BBandBot( P, Period, Width )>Ref(BBandBot( P, Period, Width ),-1);


UpColor=IIf(TopCond AND MidCond,colorTurquoise,colorPink);
DownColor=IIf(MidCond AND BotCond,colorTurquoise,colorPink);

PlotOHLC(BBandTop( P, Period, Width ),BBandTop( P,Period, Width ),MA(C,Period),MA(C,Period), "", UpColor, styleCloud+styleNoLabel+styleNoTitle, Null, Null, Null, -2 );
PlotOHLC(MA(C,Period),MA(C,Period),BBandBot( P, Period, Width ),BBandBot( P, Period, Width ), "", DownColor, styleCloud+styleNoLabel+styleNoTitle, Null, Null, Null, -2 );

Plot(BBandBot( P, Period, Width ),"",colorGreen,styleThick+styleNoTitle, Null, Null, Null, -1);
Plot(BBandTop( P, Period, Width ),"",colorRed,styleThick+styleNoTitle, Null, Null, Null, -1);
Plot(MA(C,Period),"",colorLime,styleThick+styleNoTitle, Null, Null, Null, -1);

Title=Name();


Filter=TopCond AND MidCond AND BotCond;
AddColumn(V,"volume",1.0);

_SECTION_END();




_SECTION_BEGIN("Price");
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 )) ));

trendup = IIf(MACD(12,26) > 0 AND MACD(12,26) > Signal(12,26,9), colorBlue, colorWhite);
trendcolor = IIf(MACD(12,26) < 0 AND MACD(12,26) < Signal(12,26,9), colorRed, trendup);
Plot( C, "Close", trendcolor, styleBar | styleThick );

//RSIup = RSI(7) > 70;
//RSIdown = RSI(7) < 30;

sp = Param( "RSI Period", 7, 1, 100 );
r = RSI( sp );
RSIup = r > 70; 
RSIdown = r < 30;

shape = RSIup * shapeNone + RSIdown * shapeNone;
PlotShapes(shape, IIf( RSIup, colorBrightGreen, colorRed ), 0, IIf( RSIup, Low, High ) );
 
if( ParamToggle("Tooltip shows", "All Values | Only Prices" ) )
{
 ToolTip=StrFormat("Open: %g\nHigh:  %g\nLow:   %g\nClose:  %g (%.1f%%)\nVolume: "+NumToStr( V, 1 ), O, H, L, C, SelectedValue( ROC( C, 1 )));
}
_SECTION_END();

SetChartBkColor(ParamColor("Panel color ",colorBlack));

PlotOHLC( Open,  High,  Low,  Close, "", colorLime, styleBar| styleThick   );



_SECTION_BEGIN("trailstops");
EntrySignal = C > ( LLV( L, 20 ) + 2 * ATR( 10 ) ); 
ExitSignal = C < ( HHV( H, 20 ) - 2 * ATR( 10 ) ); 
Color = IIf( EntrySignal, colorBlue, IIf( ExitSignal, colorOrange, colorGrey50 )); 
TrailStop = HHV( C - 2 * ATR(10), 15 ); 
ProfitTaker = EMA( H, 13 ) + 2 * ATR(10); 

/* plot price chart and stops */ 
Plot( TrailStop, "Trailing stop", colorGold, styleThick | styleLine  ); 
Plot( C, "Price", color, styleBar  ); 

/* plot color ribbon */ 
Plot( 2, "", Color, styleArea | styleOwnScale | styleNoLabel, -0.1, 50 );


_SECTION_BEGIN("GFX EMA");
procedure Plotlinewidth(pvalue,ptitle,pcolor,pstyle,pmin,pmax,pxshift,plinewidth,pshowdate)
{
local pvalue,ptitle,pcolor,pstyle,pmin,pmax,pxshift,plinewidth,ppenstyle,pshowdate;
local Miny,Maxy; local Lvb,fvb; local pxwidth,pxheight; local TotalBars,axisarea; local i,x,y;
if(plinewidth>0 && Status("action") == 1 && (pstyle & styleLine==styleLine)){
GfxSetOverlayMode(0);
Miny=Status("axisminy"); Maxy=Status("axismaxy");
lvb=Status("lastvisiblebar"); fvb=Status("firstvisiblebar");
pxwidth=Status("pxwidth"); pxheight=Status("pxheight");
TotalBars=Lvb-fvb; xaxisarea=56; 
if(pshowdate)yaxisarea=10;
else
yaxisarea=0; i=0;
x=5+i*(pxwidth-xaxisarea-10)/( TotalBars+1);
y=5+yaxisarea+(pvalue[i+fvb]-Miny)*(pxheight-yaxisarea-10)/(Maxy-Miny);
GfxMoveTo(x,pxheight - y);
for(i=1; i<TotalBars AND i<(BarCount-fvb); i++) 
{
GfxSelectPen(pcolor[i + fvb],plinewidth,0);
x=5+i*(pxwidth-xaxisarea-10)/(TotalBars+1);
y=5+yaxisarea+(pvalue[i+fvb]-Miny)*(pxheight-yaxisarea-10)/(Maxy-Miny);
GfxLineTo(x,pxheight - y);
}}}
RequestTimedRefresh(2); 
_SECTION_END();



_SECTION_BEGIN("Small Triggers");
p1 = Param("TL 1 Periods", 20, 5, 50, 1);
p2 = Param("TL 2 Periods", 5, 3, 25, 1);
TL1 = LinearReg(C, p1);
TL2 = EMA(TL1, p2);
Col1 = IIf(TL1 > TL2, ParamColor("TL Up Colour", colorBrightGreen), ParamColor("TL Dn Colour", colorCustom12));
Plot(TL1, "TriggerLine 1", Col1, styleLine|styleThick|styleNoLabel);
Plot(TL2, "TriggerLine 2", Col1, styleLine|styleThick|styleNoLabel);
_SECTION_END();

_SECTION_BEGIN("Large Triggers");
p3 = Param("TL 3 Periods", 80, 5, 100, 1);
p4 = Param("TL 4 Periods", 20, 3, 100, 1);
TL3 = LinearReg(C, p3);
TL4 = EMA(TL3, p4);
Col1 = IIf(TL3 > TL4, ParamColor("TLL Up Colour", colorBlue), ParamColor("TLL Dn Colour", colorRed));
Plot(TL3, "TriggerLine 3", Col1, styleLine|styleThick|styleNoLabel);
Plot(TL4, "TriggerLine 4", Col1, styleLine|styleThick|styleNoLabel);
_SECTION_END();

_SECTION_BEGIN("Fibo Retrace and Extensions");
	fibs = ParamToggle("Plot Fibs","Off|On",1);
	pctH = Param ("Pivot Hi %", 0.325,0.001,2.0,0.002);
	HiLB = Param ("Hi LookBack",1,1,BarCount-1,1);
	pctL = Param ("Pivot Lo %", 0.325,0.001,2.0,0.002);
	LoLB = Param ("Lo LookBack",1,1,BarCount-1,1);
	Back = Param ("Extend Left = 2",1,1,500,1);
	Fwd  = Param("Plot Forward", 0, 0, 500, 1);
	text = ParamToggle("Plot Text","Off|On",1);
	hts  = Param ("Text Shift", -33.5,-50,50,0.10);
	style =ParamStyle("Line Style",styleLine,styleNoLabel);
x = BarIndex();
pRp  = PeakBars( H, pctH, 1) == 0;
yRp0 = SelectedValue(ValueWhen( pRp, H, HiLB));
xRp0 = SelectedValue(ValueWhen( pRp, x, HiLB));
pSp  = TroughBars( L, pctL, 1) == 0;
ySp0 = SelectedValue(ValueWhen( pSp, L, LoLB));
xSp0 = SelectedValue(ValueWhen( pSp, x, LoLB));
Delta = yRp0 - ySp0;

function fib(ret)
{
retval = (Delta * ret);
Fibval = IIf(ret < 1.0 
AND xSp0 < xRp0, yRp0 - retval, IIf(ret < 1.0 
AND xSp0 > xRp0, ySp0 + retval,IIf(ret > 1.0 
AND xSp0 < xRp0, yRp0 - retval, IIf(ret > 1.0 
AND xSp0 > xRp0, ySp0 + retval, Null)))); 
return FibVal;
}

x0 = Min(xSp0,xRp0)-Back;
x1 = (BarCount -1);

r236 = fib(0.236);	r236I = LastValue (r236,1);
r382 = fib(0.382);	r382I = LastValue (r382,1);
r050 = fib(0.50);		r050I = LastValue (r050,1);
r618 = fib(0.618);	r618I = LastValue (r618,1);
r786 = fib(0.786);	r786I = LastValue (r786,1);
e127 = fib(1.27);		e127I = LastValue (e127,1);
e162 = fib(1.62);		e162I = LastValue (e162,1);
e200 = fib(2.00);		e200I = LastValue (e200,1);
e262 = fib(2.62);		e262I = LastValue (e262,1);
e424 = fib(4.24);		e424I = LastValue (e424,1);

p00 = IIf(xSp0 > xRp0,ySp0,yRp0); 	p00I = LastValue (p00,1);
p100 = IIf(xSp0 < xRp0,ySp0,yRp0); 	p100I = LastValue (p100,1);
color00 =IIf(xSp0 > xRp0,colorLime,colorRed);
color100 =IIf(xSp0 < xRp0,colorLime,colorRed);

numbars = LastValue(Cum(Status("barvisible")));
fraction= IIf(StrRight(Name(),3) == "", 3.2, 3.2);

if(fibs==1)
{
Plot(LineArray(xRp0-Fwd,yRp0,x1,yRp0,Back),"PR",32,8|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(xSp0-Fwd,ySp0,x1,ySp0,Back),"PS",27,8|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,r236,x1,r236,Back),"",45,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,r382,x1,r382,Back),"",44,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,r050,x1,r050,Back),"",41,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,r618,x1,r618,Back),"",43,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,r786,x1,r786,Back),"",42,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,e127,x1,e127,Back),"e127",47,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,e162,x1,e162,Back),"e162",47,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,e200,x1,e200,Back),"p200",47,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,e262,x1,e262,Back),"p262",47,style|styleNoRescale,Null, Null,Fwd);
Plot(LineArray(x0-Fwd,e424,x1,e424,Back),"p424",25,style|styleNoRescale,Null, Null,Fwd);
}

if(text==1)
{ 
PlotText(" 0% = " + WriteVal(p00,fraction), 	LastValue(BarIndex())-(numbars/hts), p00I  + 0.05, color00);
PlotText("23% = " + WriteVal(r236,fraction), LastValue(BarIndex())-(numbars/hts), r236I + 0.05, 45);
PlotText("38% = " + WriteVal(r382,fraction), LastValue(BarIndex())-(numbars/hts), r382I + 0.05, 44);
PlotText("50% = " + WriteVal(r050,fraction), LastValue(BarIndex())-(numbars/hts), r050I + 0.05, 41);
PlotText("62% = " + WriteVal(r618,fraction), LastValue(BarIndex())-(numbars/hts), r618I + 0.05, 43);
PlotText("78% = " + WriteVal(r786,fraction), LastValue(BarIndex())-(numbars/hts), r786I + 0.05, 42);
PlotText("100% = " + WriteVal(p100,fraction), LastValue(BarIndex())-(numbars/hts),p100I + 0.05, color100);
PlotText("127% = " + WriteVal(e127,fraction), LastValue(BarIndex())-(numbars/hts),e127I + 0.05, 47);
PlotText("162% = " + WriteVal(e162,fraction), LastValue(BarIndex())-(numbars/hts),e162I + 0.05, 47);
PlotText("200% = " + WriteVal(e200,fraction), LastValue(BarIndex())-(numbars/hts),e200I + 0.05, 47);
PlotText("262% = " + WriteVal(e262,fraction), LastValue(BarIndex())-(numbars/hts),e262I + 0.05, 47);
PlotText("424% = " + WriteVal(e424,fraction), LastValue(BarIndex())-(numbars/hts),e424I + 0.05, 25);
}
_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, 
 
"BIdx = " + BarIndex() + 
 
"\n" + "O = " + O + "\n"+"H = "+ H + "\n"+"L = " + L
 
+ "\n"+"C ",
 
colorBlack, styleBar); 
 
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, shapeHollowDownArrow, shapeNone), colorRed, 0,
 
High, Offset=-15);
 
PlotShapes(
 
IIf(aLPivs==1, shapeHollowUpArrow , shapeNone), colorBrightGreen, 0, 
 
Low, Offset=-15);
_SECTION_END();

_SECTION_BEGIN("Dots Color");
acc = Param("Acceleration", 0.01, 0, 1, 0.001 );
accm = Param("Max. acceleration", 0.1, 0, 1, 0.001 );
myColor = IIf (C > SAR( acc, accm ) , colorTurquoise , colorRed);
Plot( SAR( acc, accm ), _DEFAULT_NAME(), myColor , ParamStyle("Style", styleDots |styleThick | styleNoLine, maskDefault | styleDots | styleThick | styleNoLine ) );
_SECTION_END();

SetChartBkGradientFill( ParamColor("BgTop", ColorRGB( 172,172,172 )),

ParamColor("BgBottom", ColorRGB( 172,172,172 )),ParamColor("titleblock",ColorRGB( 172,172,172 )));