JASmith's Bollinger bands width-ratio for Amibroker (AFL)
jasmith almost 13 years ago Amibroker (AFL)
Plots ratio of width of bollinger bands to an MA with the same period. Very useful indicator of price volatility and trend. Low values indicate low absolute volatility. Sustained high values usually indicate a strong trend.
Indicator / Formula
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_SECTION_BEGIN("BB Width Ratio");
Price = ParamField("Price", 4);
Periods = Param("Periods", 15, 2, 100, 1 );
Width = Param("Width", 2, 0, 10, 0.05 );
Color = ParamColor("Color", colorRed );
bbt = BBandTop( Price , Periods, Width );
bbb = BBandBot( Price , Periods, Width );
bbWidthRaio = (bbt-bbb)/MA(Price, Periods);
Plot(EMA(bbWidthRaio,3), _DEFAULT_NAME(), colorRed);
_SECTION_END();0 comments
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