Public Overloads Shared Function RelativeStrengthIndex( _
   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.RelativeStrengthIndex(seriesName, s, lengthOfPeriod)

public static Series RelativeStrengthIndex( 
   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

An series where the first element is the high in the last trading period, the second term is the high in 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

The RSI indicator is calculated by the following formula:

RSI = 100 - 100/(1+RS),

where:

RS = (Average of noOfPeriods days up closes) / (Average of noOfPeriods days' down closes),

Interpretation

An RSI above 70 is considered overbought and below 30 is considered oversold.

Reference