The Coral Filter – a.k.a The Coral Trend Indicator – is a linear IIR filter and widely popular amongst FOREX traders. As the name implies, it is commonly used as a trend filter in combination with other indicators. An Indicator Spotlight post (with video) is available here.
Indicator Description
The Coral Filter, aka the Coral Trend Indicator is a linear combination of moving averages, all obtained by a triple or higher order exponential smoothing. The indicator comes with a trend indication which is based on the normalized slope of the plot.
The current trend is displayed as paint bars; up, down or flat. By adjusting the neutral threshold parameter, one may define the range of slopes that will render a flat trend.
Therefore, with a neutral threshold parameter of 0, the neutral state will be eliminated and the indicator will only plot up or down trends.
The Coral Trend Indicator is mainly used as a filter. When prices move above the filter, short positions are blocked and vice versa. This basic approach may be refined by further considering the normalized slope. If the slope trend is up, it’s long only, whereas a slope trend which is down is short only. If the slope is flat, both long and short scenarios are considered.
Strategy builder: The Coral Filter trend information is exposed as public data series and can be accessed by the strategy builder as:
- uptrend = 1
- downtrend = -1
- neutral trend = 0
Market analyzer: The Coral Filter has a separate market analyzer column that may be used to display the current trend.
Other Library indicators
The Coral Filter is best used in combination with additional tools for technical analysis such as the Regression Channel. Specifically, you may review our Spotlight on the Linear Regression Channel. Also, consider our momentum oscillators category, as well as our tools for determining support / resistance and volume analysis. The Momentum Oscillator category includes the Acceleration Deceleration, TSI or the QQE indicator. Furthermore, the Ichimoku Kinko Hyo may also be considered a momentum indicator.
For support / resistance levels you may have a look our Session Tools, such as the Rolling Pivots Daily, the Rolling Pivots Weekly, the Rolling Pivots Monthly, the Camarilla Pivots Daily, the Camarilla Pivots Weekly, the Camarilla Pivots Monthly, the Camarilla Pivots N Monthly.
You may also review the Fibonacci category, specifically the Prior Day Fib Lines / Current Day Fib Lines, Prior Week Fib Lines / Current Week Fib Lines, the Current Month Fib Lines / Prior Month Fib Lines or the Current N Month Fib Lines / Prior N Month Fib Lines . Also, consider reviewing our tools for Range and Volume Analysis, i.e. relative range / relative volume analysis. A list of of our NinjaTrader indicators is found here.
The Coral Filter indicator is available for NinjaTrader 8.
