Post-1970 — Cycles Course method. The 1970 book uses envelopes and displaced MAs; phasing analysis is the complementary pattern-recognition approach.
Three stages
1. Entry
Identify the dominant cycle trough on the analyzed timeframe.
2. Extension
From that trough, mark shorter-cycle troughs anchored to longer ones — forward and backward across nominal scales.
3. Completion
Starting from the shortest recognizable cycle (e.g. 5-day on daily), work up the hierarchy and resolve open longer-cycle troughs.
Output
- Trough map per nominal cycle
- Current wavelength estimate (variation allowed)
- Underlying trend for directional filter
- Basis for FLD and post-course VTL