Highly Accurate Buy Sell Zone Line Chart - Amibroker AFL Code

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_SECTION_BEGIN("Ensign Volatility Stop");


k=Param("multiplication factor", 1,0.5,5,0.1);
period=k*9;

VS_raw = 2.5 * EMA(ATR(1), period);

// for longs, VS line is below price

loline = VS_below_price = HHV(Close, period) - VS_raw;

// for shorts, VS line is above price

hiline = VS_above_price = LLV(Close, period) + VS_raw;

between = IIf (C < hiline AND C > loline, 1, 0);

up = IIf(C > hiline OR (H > Ref(H, -1) AND H > hiline), 1, 0);

dn = IIf(C < loline OR (L < Ref(L, -1) AND L < loline), 1, 0);

upcond = IIf(between AND BarsSince(up) < BarsSince(dn) , 1, 0);

dncond = IIf(between AND BarsSince(dn) < BarsSince(up) , 1, 0);

upline = IIf(up OR upcond, loline, Null);

dnline = IIf(dn OR dncond, hiline, Null);

Plot(C, "", colorLightGrey, styleBar);

Plot(upline, "", colorGreen, styleStaircase) ;

Plot(dnline, "", colorRed, styleStaircase) ;
Buy=upline;
Sell=dnline;
Buy=ExRem(Buy,Sell);
Sell=ExRem(Sell,Buy);
PlotShapes(Buy*shapeUpArrow,colorGreen);
PlotShapes(Sell*shapeDownArrow,colorRed);


/**** END ****/