WPF Chart Range Indicators

Bollinger Bands, created by John Bollinger, are a popular range indicator traders and investors use to measure market volatility. The bands are based on a moving price average and are drawn at a certain number of standard deviations away from the average. As a measure of volatility, the bands self-adjust, expanding during high volatility and contracting during periods of low volatility. This makes them useful for identifying potential trading opportunities and managing risk in changing market conditions.

An Envelope is a range indicator consisting of two Moving averages, with one average shifting upward and the other shifting downward. This creates a band or Envelope around the price that can be useful for determining potential support and resistance levels. Envelopes are a popular tool for trend-following traders, as they can help identify entry and exit points based on price movement within the band. By adjusting the length of the moving averages, traders can customize the Envelope to suit their specific trading strategy and market conditions.