Price Support Resistance AFL

This afl draws price chart with support and resistance lines in Amibroker. Save this afl in custom folder and insert it. This is very useful afl.

_SECTION_BEGIN("Resistance");

HaClose =EMA((O+H+L+C)/4,3);
HaOpen = AMA( Ref( HaClose, -1 ), 0.5 );
HaHigh = Max( H, Max( HaClose, HaOpen ) );
HaLow = Min( L, Min( HaClose, HaOpen ) );
Temp = Max(High, HaOpen);
Temp = Min(Low,HaOpen);

supres=ParamToggle("Sup_Res","No|Yes",1);
if(supres)
{


Prd1=Param("Res_Period1",2,0,200,1);

test = TEMA ( High , Prd1 ) ;

PK = test > Ref(test,-1) AND Ref(test,1) < High;//Peak
PKV0 = ValueWhen(PK,haHigh,0);//PeakValue0
PKV1 = ValueWhen(PK,haHigh,1);//PeakValue1
PKV2 = ValueWhen(PK,haHigh,2);//PeakValue2

MPK = PKV2 < PKV1 AND PKV1 > PKV0 ;//MajorPeak

MPKV = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, PKV1,1); //MajorPeakValue
MPKD = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, DateNum(),1); //MajorPeakDate
SD = IIf(DateNum() < LastValue(MPKD,lastmode = True ), Null, LastValue(MPKV,Lastmode = True));//SelectedDate
Plot(SD, "Resist1", colorGreen,ParamStyle("ResStyle1",styleLine|styleNoTitle,maskAll));

MPKV2 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, PKV1,2); //MajorPeakValue
MPKD2 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, DateNum(),2); //MajorPeakDate
SD2 = IIf(DateNum() < LastValue(MPKD2,lastmode = True ), Null, LastValue(MPKV2,Lastmode = True));//SelectedDate
Plot(SD2, "Resist2", colorGreen,ParamStyle("ResStyle2",styleLine|styleNoTitle,maskAll));


MPKV3 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, PKV1,3); //MajorPeakValue
MPKD3 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, DateNum(),3); //MajorPeakDate
SD3 = IIf(DateNum() < LastValue(MPKD3,lastmode = True ), Null, LastValue(MPKV3,Lastmode = True));//SelectedDate
Plot(SD3, "Resist3", colorGreen,ParamStyle("ResStyle3",styleLine|styleNoTitle,maskAll));


MPKV4 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, PKV1,4); //MajorPeakValue
MPKD4 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, DateNum(),4); //MajorPeakDate
SD4 = IIf(DateNum() < LastValue(MPKD4,lastmode = True ), Null, LastValue(MPKV4,Lastmode = True));//SelectedDate
Plot(SD4, "Resist4", colorGreen,ParamStyle("ResStyle4",styleLine|styleNoTitle,maskAll));



MPKV5 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, PKV1,5); //MajorPeakValue
MPKD5 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, DateNum(),5); //MajorPeakDate
SD5 = IIf(DateNum() < LastValue(MPKD5,lastmode = True ), Null, LastValue(MPKV5,Lastmode = True));//SelectedDate
Plot(SD5, "Resist5", colorGreen,ParamStyle("ResStyle5",styleLine|styleNoTitle,maskAll));


MPKV6 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, PKV1,6); //MajorPeakValue
MPKD6 = ValueWhen(Ref(MPK,-1) == 0 AND MPK == 1, DateNum(),6); //MajorPeakDate
SD6 = IIf(DateNum() < LastValue(MPKD6,lastmode = True ), Null, LastValue(MPKV6,Lastmode = True));//SelectedDate
Plot(SD6, "Resist6", colorGreen ,ParamStyle("ResStyle6",styleLine|styleNoTitle,maskAll));




_SECTION_END();

HaClose =EMA((O+H+L+C)/4,3);
HaOpen = AMA( Ref( HaClose, -1 ), 0.5 );
HaHigh = Max( H, Max( HaClose, HaOpen ) );
HaLow = Min( L, Min( HaClose, HaOpen ) );
Temp = Max(High, HaOpen);
Temp = Min(Low,HaOpen);

_SECTION_BEGIN("Support");
//SP=L > Ref(L,-1) AND Ref(L,1) < L;//Peak

Prd2=Param("Sup_Period1",2,0,200,1);

test2 = TEMA ( Low , Prd2 ) ;

SP = Ref(test2,1) > Low AND test2 < Ref(test2,-1);//Peak
SPV0 = ValueWhen(SP,haLow,0);//PeakValue0
SPV1 = ValueWhen(SP,haLow,1);//PeakValue1
SPV2 = ValueWhen(SP,haLow,2);//PeakValue2

//PKV5 = ValueWhen(PK,haHigh,5);//PeakValue5
//PKV6 = ValueWhen(PK,haHigh,6);//PeakValue6

MSP = SPV2 > SPV1 AND SPV1 < SPV0 ;//MajorPeak

MSPV = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, SPV1,1);
MSPD = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, DateNum(),1);
SD = IIf(DateNum() < LastValue(MSPD,lastmode = True ), Null, LastValue(MSPV,Lastmode = True));
Plot(SD,"Support1", colorBrown,ParamStyle("SupportLine1",styleLine|styleNoTitle,maskAll));



MSPV2 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, SPV1,2);
MSPD2 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, DateNum(),2);
SD2 = IIf(DateNum() < LastValue(MSPD2,lastmode = True ), Null, LastValue(MSPV2,Lastmode = True));
Plot(SD2,"Support2", colorBrown,ParamStyle("SupportLine2",styleLine|styleNoTitle,maskAll));



MSPV3 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, SPV1,3);
MSPD3 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, DateNum(),3);
SD3 = IIf(DateNum() < LastValue(MSPD3,lastmode = True ), Null, LastValue(MSPV3,Lastmode = True));
Plot(SD3,"Support3", colorBrown,ParamStyle("SupportLine3",styleLine|styleNoTitle,maskAll));


MSPV4 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, SPV1,4);
MSPD4 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, DateNum(),4);
SD4 = IIf(DateNum() < LastValue(MSPD4,lastmode = True ), Null, LastValue(MSPV4,Lastmode = True));
Plot(SD4,"Support4", colorBrown,ParamStyle("SupportLine4",styleLine|styleNoTitle,maskAll));


MSPV5 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, SPV1,5);
MSPD5 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, DateNum(),5);
SD5 = IIf(DateNum() < LastValue(MSPD5,lastmode = True ), Null, LastValue(MSPV5,Lastmode = True));
Plot(SD5,"Support5", colorBrown,ParamStyle("SupportLine5",styleLine|styleNoTitle,maskAll));


MSPV6 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, SPV1,6);
MSPD6 = ValueWhen(Ref(MSP,-1) == 0 AND MSP == 1, DateNum(),6);
SD6 = IIf(DateNum() < LastValue(MSPD6,lastmode = True ), Null, LastValue(MSPV6,Lastmode = True));
Plot(SD6,"Support6", colorBrown,ParamStyle("SupportLine6",styleLine|stylehidden|styleNoTitle,maskAll));

}

_SECTION_BEGIN("Price");
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() );