TTR (version 0.2)

TRIX: Triple Smoothed Exponential Oscillator

Description

The TRIX indicator calculates the rate of change of a triple exponential moving average. Developed by Jack K. Hutson.

Usage

TRIX(price, n=20, nSig=9, maType, percent=TRUE, ...)

Arguments

price

Price series that is coercible to xts or matrix.

n

Number of periods for moving average.

nSig

Number of periods for signal line moving average.

maType

Either: (1) A function or a string naming the function to be called, or (2) a list with the first component like (1) above, and additional parameters specified as named components. See Examples.

percent

logical; if TRUE, the rate of change is calculated using the ROC function, otherwise the momentum function is used.

...

Other arguments to be passed to the maType function in case (1) above.

Value

• A object of the same class as price or a vector (if try.xts fails) containing the TRIX values.

Details

The TRIX is calculated as follows: 3MA = MA( MA( MA(price) ) ) trix = 100 * [ 3MA(t) / 3MA(t-1) - 1 ]

References

The following site(s) were used to code/document this indicator: http://www.fmlabs.com/reference/default.htm?url=TRIX.htm http://www.equis.com/Customer/Resources/TAAZ/?c=3&p=114 http://www.linnsoft.com/tour/techind/trix.htm http://stockcharts.com/education/IndicatorAnalysis/indic_trix.htm

See Also

See EMA, SMA, etc. for moving average options; and note Warning section.

Examples

data(ttrc)
  trix  <- TRIX(ttrc[,"Close"])
  trix4 <- TRIX(ttrc[,"Close"],
    maType=list(list(SMA), list(EMA, wilder=TRUE), list(SMA), list(DEMA)))