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

Visual Basic (Usage)	Copy Code
Dim seriesName As String Dim s As Series Dim lengthOfPeriod As Integer Dim value As Series   value = FinancialEngine.AroonDownOverPeriod(seriesName, s, lengthOfPeriod)

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.

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).

Reference