The Heikin Ashi indicator is a technique that modifies the candlesticks that you would normally use to base your decisions on, as well as has it's own set of rules and techniques for interpreting the Heikin Ashi indicator. Included below is the ELD file and a sample workspace for TradeStation.
This is an implementation of Surfing the Linear Regression Curve with Bond Futures brought to us by Dennis Meyers, Ph.D. in the May of 1998, Technical Analysis of Stocks & Commodities.
Generation of candle code as referred to by Viktor Likhovidov, this will compute the candlestick with upper and lower shadows, the top and bottom thresholds for each element, and the candle code itself.