Used for the same reasons as the typical moving average. The first point is equal to the SMA, but it uses a recursive approach to calculate all subsequent data points.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in publications is governed by House rules. 您可以收藏它以在圖表上使用。