Extra indicators
Fisher Transform
Turns the price's position in its recent range into sharp peaks and troughs that make turning points stand out.
L’idée en termes simples
Prices are not normally distributed, which hides turning points. The Fisher transform reshapes the price's position within its recent range so extremes become clear spikes.
Mode de calcul
Scale the candle's midpoint into −1…+1 inside the high–low range of N candles, smooth it, and apply ½·ln((1 + x) ÷ (1 − x)). The trigger is the previous value.
x = 0.66 × ((mid − LL) ÷ (HH − LL) − 0.5) + 0.67 × x₋₁
Fisher = 0.5 × ln((1 + x) ÷ (1 − x)) + 0.5 × Fisher₋₁Comment l’utiliser
- Fisher crossing its trigger line marks a likely turn.
- Extreme readings (beyond ±1.5 to ±2) warn of exhaustion.
Tirer des conclusions
- Sharp, sudden turns are typical: it is designed to be decisive.
Exemple
GOLD H4: Fisher reaches +2.4 and crosses below its trigger; the rally pauses for the next few candles.
Les prix des exemples sont donnés à titre d’illustration.
Points de vigilance
- In strong trends it can stay extreme and give early reversal signals.
Un peu d’histoire
Introduced by John Ehlers in 2002 ("Using the Fisher Transform", Stocks & Commodities).
Contenu éducatif uniquement. Aucun indicateur ni aucune figure ne prédit l’avenir, et rien ici ne constitue un conseil en investissement.