William's % R.
WPR(HLC, n = 14)
Object that is coercible to xts or matrix and contains High-Low-Close prices. If only a univariate series is given, it will be used. See details.
Number of periods to use.
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.
A object of the same class as
HLC or a vector (if
try.xts fails) containing the William's %R
The William's %R calculation is similar to stochastics' fast %K.
The value for William's %R will be 0.5 whenever the
highest high and lowest low are the same over the last
The following site(s) were used to code/document this
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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")
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