WPR {TTR}R Documentation

William's %R

Description

William's % R.

Usage

  WPR(HLC, n=14)

Arguments

HLC High-Low-Close price series to use. If only a univariate series is given, it will be used. See details.
n Number of periods to use.

Details

If an High-Low-Close series is provided, the indicator is calculated using the high/low values. If a vector is provided, the calculation only uses that series.

Value

A vector containing the William's %R values.

Note

The William's %R calculation is similar to stochastics' fast %K.

Author(s)

Josh Ulrich

References

The following site(s) were used to code/document this indicator:
http://www.fmlabs.com/reference/WilliamsR.htm
http://www.equis.com/Customer/Resources/TAAZ?c=3&p=126
http://linnsoft.com/tour/techind/willR.htm
http://stockcharts.com/education/IndicatorAnalysis/indic_williamsR.html

See Also

See stoch.

Examples

  data(ttrc)
  stochOsc <- stoch(ttrc[,c("High","Low","Close")])
  stochWPR<- WPR(ttrc[,c("High","Low","Close")])

  plot(tail(stochOsc[,"fastK"], 100), type="l",
      main="Fast %K and Williams %R", ylab="",
      ylim=range(cbind(stochOsc, stochWPR), na.rm=TRUE) )
  lines(tail(stochWPR, 100), col="blue")
  lines(tail(1-stochWPR, 100), col="red", lty="dashed")

[Package TTR version 0.14-0 Index]