This is a no-volume version of Vervoort's SVAPO. The original version is @ tradingview.com/v/Nsgeq4iJ/. Since it doesn't include volume in its calculations, you can use this on FX.
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。