Aroon.AroonDown Method

Calculates the Aroon Down indicator which measures the relative time since the last lowest low for all periods for which sufficient data is provided.

public double AroonDown(
double[] lows
);

Parameters

lows: An array of the trading lows over the last n-periods where the k-th terms of the array if the trading low on the k-th previous period.

Return Value

Double value of the Aroon Down Indicator for the latest trading period.

Remarks

This indicator for each period will return a value between 0 and 100, where a higher value indicates that the lowest low was achieved more recently. Persistent values between 70 and 100 are said to indicate weakness in the asset and in conjunction with a low range (i.e. 0-30) in the Aroon Up indicator, indicates an downward trend.

Evaluation

The Aroon Down indicator is given by:

Aroon Down Indicator = 100 * (n - (number of periods since last highest high over n periods) ) / n,

where n is the number of periods being considered (a reasonable default value for n is 14).

Exceptions