AroonDownOverPeriod(String,Series,Int32) 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.

[Visual Basic]
Overloads Public Shared Function AroonDownOverPeriod( _
   ByVal seriesName As String, _
   ByVal s As Series, _
   ByVal lengthOfPeriod As Integer _
) As Series

[C#]
public static Series AroonDownOverPeriod( 
   string seriesName,
   Series s,
   int lengthOfPeriod
);

Parameters

seriesName

The name of the series which will be displayed on the chart, i.e. its label.

s

A financial series where the first term is the traded high of the asset within the most recent trading period, the second term is the traded high of the asset within the previous period and so on.

lengthOfPeriod

An integer which represents the length of the period over which the indicator will be iteratively evaluated.

Remarks

The 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 of the Aroon Down Indicator

The Aroon Down indicator for each period is given by:

100(n - (number of days since last highest high over n days))/n

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

See Also

FinancialEngine Class  | FinancialEngine Members  | Overload List  | This indicator is a special case of FinancialAroonDownOverPeriod indicator and calculates the Aroon Down indicator for a single period.

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