Aroon Histogram OB OS Zone AFL - Amibroker AFL Code

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PL = Param("Periods",14,4,45,1);

AroonUp = 100 * (PL - (HHVBars(H, PL + 1))) / PL;
AroonDn = 100 * (PL - (LLVBars(L, PL + 1))) / PL;
AroonOsc = AroonUp - AroonDn;

Plot(AroonOsc, "Aroon Oscillator("+PL+")", IIf(AroonOsc > 0,colorGreen,colorRed), styleHistogram| styleThick);
PlotGrid(-50, colorLightGrey);
PlotGrid(50, colorLightGrey);

"The Aroon Oscillator indicates an upward trend when it is above zero and a downward trend when it is below zero.";
"";
"The farther away the oscillator is from the zero line, the stronger the trend.";