BollingerPercentB
forge.taclassSince Forge API 1
Signaturepython
forge.ta.BollingerPercentB(**inputs: Any) -> NoneWhere the price sits between the Bollinger Bands.
Inputs
| Name | Type | Default | Range |
|---|---|---|---|
| source | source | close | |
| period | int | 20 | 1 to 5000 |
| deviations | float | 2 | 0 to 10 |
%B = (source - lower) / (upper - lower)
No value when the bands meet.
middle = the simple average of the source over period
upper = middle + deviations * the population standard deviation of the same window, lower = middle - deviations * the same