The FXB.ta.Aroon class calculates the Aroon indicator: a measure of the number of bars since the high and low of a period (expressed on a scale of 0 to 100). It is a bar-based calculation, and requires candle data as an input. Parameters are as follows:
| Parameter | Description |
| period | Rolling period for the calculation |
Note: the FXB.ta.Aroon is exceptional because the standard GetValue() function returns the value of the Aroon oscillator, not of the Aroon itself. To get the high and low values of the Aroon, use the following functions:
| Parameter | Description |
| GetAroonUpArray() | Returns an array of all the high values |
| GetAroonDownArray() | Returns an array of all the low values |
| GetAroonUpValue(idx) | Returns the high value at bar index #idx |
| GetAroonDownValue(idx) | Returns the low value at bar index #idx |
