One from many harmonic pattern that consists of two equivalent price legs. The ABCD pattern that helps traders predict when the price is about to change direction.
Tracing And Calculation
This code using pivot high and pivot low built-in method and calculate with Fibonacci Retracement.
Limitation
To find ABCD pattern is very difficult, just coming up a few from thousand candle. That why this code using little bit tolerance ratio to get more pattern.