Bollinger Band Width

The width of Bollinger Band shows middle price value in percent for the last PERIOD time periods. Sharp price changes tend to occur after the bandwidths tighten. You must be careful after the bandwidth’s tighten, because upon the historical experience, the market often starts the false movement just before the big price changes in another direction.

Syntax:

Public Function BollingerBandWidth(ByVal BBWIn() As Double, ByVal Lag As Long, ByVal Deviation As Long) As Double

Parameters:

ByVal BBWIn() As Double
ByVal Lag As Long
ByVal Deviation As Long

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Example:

Dim TA4Net As New TA4Net.CTAFunctions("YOUR-REGISTRATION-CODE")

Dim Result() As Double

Dim CloseValues() As Double

' loading values to array

HLOCV = GetHLOCVValues()

' calculating Technical Analysis function

Result = TA4Net.BollingerBandWidth(CloseValues, 14, 10)

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