Gap Up Gap Down Opening Detector - aflcode.com | Latest collection of Amibroker afl 2023

Gap Up Gap Down Opening Detector
//www.aflcode.com
_SECTION_BEGIN("Background Color");
BKswitch = ParamToggle("Background Color","On,Off");

OUTcolor = ParamColor("Outer Panel Color",colorLightBlue);
INUPcolor = ParamColor("Inner Panel Upper",colorBlack);
INDNcolor = ParamColor("Inner Panel Lower",colorBlack);
TitleColor = ParamColor("Title Color ",ColorRGB(245,245,245));

if (NOT BKswitch)
{
SetChartBkColor(OUTcolor); // color of outer border
SetChartBkGradientFill(INUPcolor,INDNcolor,TitleColor); // color of inner panel
}
_SECTION_END();



Gup = L>Ref(H,-1);  
Gdn = H<Ref(L,-1);  
Gap = Gup OR Gdn;  
LinLen = Param("Gap Line length",10,1,100,1);  
ShowLine = BarsSince(Gup OR Gdn) < LinLen;  
TextPos = Showline < Ref(ShowLine,-1);  
GapUpHi = IIf( ShowLine, ValueWhen(Gup,Ref(H,-1)),Null);  
GapUpLo = IIf( ShowLine, ValueWhen(Gup,L), Null); // OK  
GapDnHi = IIf( ShowLine, ValueWhen(GDn,Ref(L,-1)), Null); // OK  
GapDnLo = IIf( ShowLine, ValueWhen(GDn,H), Null);  
GapLineHi = IIf( ShowLine, ValueWhen(Gap,IIf( Gup, L, IIf( GDn, Ref(L,-1), Null))), Null);  
GapLineLo = IIf( ShowLine, ValueWhen(Gap,IIf( Gdn, H, IIf( Gup, Ref(H,-1), Null))), Null);  
Plot(C,"",colorWhite,styleCandle);  
Plot(GapLineHi,"",5,styleStaircase);  
Plot(GapLineLo,"",4,styleStaircase);  
FirstVisibleBar = Status( "FirstVisibleBar" );  
Lastvisiblebar = Status("LastVisibleBar");  
for( b = Max(LinLen,Firstvisiblebar); b <= Lastvisiblebar AND b < BarCount; b++)  
{  
if( Gap[b-LinLen+1] )  
{  
PlotText(NumToStr(GapLineHi[b],1.2),b,GapLineHi[b],5);  
PlotText("\n"+NumToStr(GapLineLo[b],1.2),b,GapLineLo[b],4);  
}  
}