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Miha Kralj
2026-03-13 13:47:10 -07:00
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lib/oscillators/stc/stc.md
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| **PineScript** | [stc.pine](stc.pine) |
- The Schaff Trend Cycle is a cyclometric oscillator that applies double-Stochastic normalization to MACD, extracting the cyclical phase hidden withi...
- Parameterized by `kperiod` (default 10), `dperiod` (default 3), `fastlength` (default 23), `slowlength` (default 50), `smoothing` (default stcsmoothing.ema).
- Output range: $0$ to $100$.
- Requires 1 bar of warmup before first valid output (IsHot = true).
- **Similar:** [MACD](../../momentum/macd/Macd.md), [Stoch](../stoch/Stoch.md) | **Complementary:** ADX | **Trading note:** Schaff Trend Cycle; double Stochastic of MACD. Faster trend detection. 25/75 signal levels.
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
The Schaff Trend Cycle is a cyclometric oscillator that applies double-Stochastic normalization to MACD, extracting the cyclical phase hidden within the trend itself. The recursive normalization produces a bounded 0–100 output that reaches extremes earlier than raw MACD while suppressing Stochastic jitter. Developed for currency markets, STC's tendency to flatline at 0 or 100 during strong trends signals continuation rather than reversal — a feature that distinguishes it from conventional momentum oscillators. Output converges toward a square wave in steady-state trending conditions.