willpctr (Financial Time Series)

William's %R

Syntax

wpctr = willpctr(highp, lowp, closep, nperiods)
wpctr = willpctr([highp, lowp, closep], nperiods)
wpctrts = willpctr(tsobj)
wpctrts = willpctr(tsobj, nperiods)
wpctrts = willpctr(tsobj, nperiods, ParameterName, ParameterValue, 
... )

Arguments

highp
High price (vector)

lowp
Low price (vector)

closep
Closing price (vector)

nperiods
Number of periods (scalar). Default = 14.

tsobj
Financial time series object

`highp`	High price (vector)
`lowp`	Low price (vector)
`closep`	Closing price (vector)
`nperiods`	Number of periods (scalar). Default = `14`.
`tsobj`	Financial time series object

Description

wpctr = willpctr(highp, lowp, closep, nperiods) calculates the William's %R values for the given set of stock prices for a specified number of periods nperiods. The stock prices needed are the high (highp), low (lowp), and closing (closep) prices. wpctr is a vector that represents the William's %R values from the stock data.

wpctr = willpctr([highp, lowp, closep], nperiods) accepts the price input as a three-column matrix representing the high, low, and closing prices, in that order.

wpctrts = willpctr(tsobj) calculates the William's %R values for the financial time series object tsobj. The object must contain at least three data series named High (high prices), Low (low prices), and Close (closing prices). wpctrts is a financial time series object with the same dates as tsobj and a single data series named 'WillPctR'.

wpctrts = willpctr(tsobj, nperiods) calculates the William's %R values for the financial time series object tsobj for nperiods periods.

wpctrts = willpctr(tsobj, nperiods, ParameterName, ParameterValue, ...) accepts parameter name/ parameter value pairs as input. These pairs specify the name(s) for the required data series if it is different from the expected default name(s). Valid parameter names are:

'HighName': high prices series name
'LowName': low prices series name
'CloseName': closing prices series name

Parameter values are the strings that represent the valid parameter names.

Example

Compute the Williams %R values for Disney stock and plot the results.

load disney.mat
dis_Wpctr = willpctr(dis)
plot(dis_Wpctr)
title('Williams %R for Disney')

See Also

stochosc, willad

Reference

Achelis, Steven B., Technical Analysis From A To Z, Second Printing, McGraw-Hill, 1995, pg. 316 - 317

willad