The FisherTransformTrigger indicator is created by delaying the FisherTransform indicator by one bar.  The FisherTransformTrigger indicator may be combined with the Fisher Transform 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.