TTR (version 0.23-2)

DPO: De-Trended Price Oscillator

Description

The Detrended Price Oscillator (DPO) removes the trend in prices - or other series - by subtracting a moving average of the price from the price.

Usage

DPO(x, n = 10, maType, shift = n/2 + 1, percent = FALSE, ...)

Arguments

x

Price, volume, etc. series that is coercible to xts or matrix.

n

Number of periods for moving average.

maType

A function or a string naming the function to be called.

shift

The number of periods to shift the moving average.

percent

logical; if TRUE, the percentage difference between the slow and fast moving averages is returned, otherwise the difference between the respective averages is returned.

…

Other arguments to be passed to the maType function.

Value

A object of the same class as x or a vector (if try.xts fails) containing the DPO values.

Details

The Detrended Price shows cycles and overbought / oversold conditions.

References

The following site(s) were used to code/document this indicator: http://www.fmlabs.com/reference/DPO.htm https://www.metastock.com/Customer/Resources/TAAZ/?p=48 http://www.stockcharts.com/school/doku.php?id=chart_school:technical_indicators:detrended_price_osci

See Also

See EMA, SMA, etc. for moving average options; and note Warning section. See MACD for a general oscillator.

Examples

# NOT RUN {
data(ttrc)
priceDPO <- DPO(ttrc[,"Close"])
volumeDPO <- DPO(ttrc[,"Volume"])

# }