NinjaScript > Language Reference > Indicator Methods >
With distinct turning points and a rapid response time, the Fisher Transform uses the assumption that while prices do not have a normal or Gaussian probability density function (that familiar bell-shaped curve), you can create a nearly Gaussian probability density function by normalizing price (or an indicator such as RSI) and applying the Fisher Transform. Use the resulting peak swings to clearly identify price reversals.
double; Accessing this method via an index value [int barsAgo] returns the indicator value of the referenced bar.
You can view this indicator method source code by selecting the menu Tools > Edit NinjaScript > Indicator within the NinjaTrader Control Center window.