The Percent Envelopes indicator draws an upper and a lower band around a predefined value with a distance of a specified percentage value. The trader can specify which data series the entry value should be (highs, lows, closing price, another indicator etc.).

It is possible to use an SMA as the entry value. In this case, the upper and lower bands will be displayed with a distance of 1.5%.


Similarly to the Bollinger Bands, the Percent Envelope indicator can be used to make buy or sell decisions and to determine whether the price is under- or overvalued.

The Percent Envelope should never be used to make decisions based solely on the output, but should be used in conjunction with other indicators to confirm signals.


PercentEnvelopes(double percent)
PercentEnvelopes(IDataSeries inSeries, double percent)

//For the upper band
PercentEnvelopes(double percent).UpperPercentBand[int barsAgo]
PercentEnvelopes(IDataSeries inSeries, double percent).UpperPercentBand[int barsAgo]

//For the lower band
PercentEnvelopes(double percent).LowerPercentBand[int barsAgo]
PercentEnvelopes(IDataSeries inSeries, double percent).LowerPercentBand[int barsAgo]

Return value


When using this method with an index (e.g. PercentEnvelopes(2)[int barsAgo] ), the value of the indicator will be issued for the referenced bar.


inSeries Input data series for the indicator

percent Difference in % for the bands (from the input value)



//Output for the upper band
Print("Value of the upper percent band is: " + PercentEnvelopes(3).UpperPercentBand[0]);

//Output for the lower band
Print("Value of the lower percent band is: " + PercentEnvelopes(3).LowerPercentBand[0]);

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