Ehlers’ describes the Fisher Transform as a mathematical process that converts a data set to one with a Gaussian Probability Density Function (PDF).  This indicator is described in Chapter 1.  It may be combined with the FisherTransformTrigger indicator to create a trading system.

PriceIn – defaults to Close but change to the Price indicator to match the book

Length – defaults to a value of 10 periods

For more information on this indicator, refer to Chapter 1 of "Cybernetic Analysis for Stocks and Futures" by John Ehlers, Publisher: John Wiley & Sons; (March 19, 2004), ISBN: 0471463078.