The Zig Zag Indicator is a technical analysis tool used to identify significant changes in price movements, typically to filter out minor price fluctuations and to highlight significant trends in the price action of a financial instrument.The Zig Zag indicator is calculated using a simple formula that determines the minimum price change needed to be considered a significant price movement. This minimum price change, or "sensitivity," is usually set as a percentage of the instrument's price. When the price of the instrument moves by a specified percentage, the Zig Zag line is drawn to connect the high or low points of the price action, creating a series of lines that show the trend in price movements.The Zig Zag indicator is often used in combination with other technical analysis tools, such as trendlines or moving averages, to help traders identify entry and exit points in the market. It is also used to determine key support and resistance levels, as well as to identify trend reversals.In summary, the Zig Zag indicator is a simple yet effective tool used in technical analysis to help traders identify significant price movements and to filter out minor price fluctuations. The formula for the Zig Zag indicator is based on a minimum price change, or sensitivity, that is set as a percentage of the instrument's price.