[[File:HAChart1.png|right|HA]] The Heikin-Ashi chart type is constructed like a regular candlestick chart (except with the new values above). The time series is defined by the user depending on the type of chart desired (daily, hourly, etc.). Instead of using the open-high-low-close (OHLC) bars like standard candlestick charts, the Heikin-Ashi technique uses a modified formula:
Close For the first bar of the data series, HA_Open = Open<br>HA_Close = (Open+High+Low+Close)/4 <br>Open HA_Open = [Open HA_Open (previous bar) + Close HA_Close (previous bar)]/2<br>High HA_High = Max (High,OpenHA_Open,CloseHA_Close)<br>Low HA_Low = Min (Low,OpenHA_Open, CloseHA_Close)