This is the same script as the built-in Ultimate Oscillator except it is calculated in log-space, which may help with some very high-volatility charts (the differences will be usually be very small though).
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。