Offers procedures which evaluate the upper and lower Bollinger Bands.
For a list of all members of this type, see BollingerBands Members.
System.Object
BollingerBands
Bollinger Bands are a type of envelope that are plotted at standard deviation levels above and below the corresponding (simple) moving average. This produces an effect of having the bands widen during periods of higher volatility and contract during less volatile periods. Bollinger Bands indicate the relative supply and demand for a given asset. If the asset moves close to the top of the envelope then it indicates that there is strong demand for the asset, conversely if the asset hugs the bottom of the trading range then it indicates that there is oversupply of the asset.
Since the Bollinger Bands will nearly always be combined with other indicators when forming a trading system the number of periods used in the evaluation of the standard deviation and moving average of the asset considered will not only vary but be influenced by the choices made in the other indicators used. Saying this, in many instances a popular and often reasonable number of periods to use is around 20-23.
Namespace: Indicators
Assembly: WebCab.DelphiWebServices.TA (in WebCab.DelphiWebServices.TA.dll)
BollingerBands Members | Indicators Namespace