KST {TTR} | R Documentation |
The Know Sure Thing (KST) is a smooth, summed, rate of change indicator. Developed by Martin Pring.
KST(price, n=c(10,10,10,15), nROC=c(10,15,20,30), nSig=9, maType="SMA", wts=1:NROW(n), ...)
price |
Price series to use. |
n |
A vector of the number of periods to use in the MA calculations. |
nROC |
A vector of the number of periods to use in the ROC calculations. |
nSig |
The number of periods to use for the KST signal line. |
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. |
wts |
A vector the same length as n , of the weight for each period
(need not sum to one). |
... |
Other arguments to be passed to the maType function in case (1) above. |
For each day (week, month, etc.), the KST calculates the ROC over several periods. Those ROCs are smoothed using the given moving averages, then multiplied by their respective weighting values. The resulting values are summed for each day (month, week, etc.).
A vector containing the Know Sure Thing values.
The KST indicates bullish/bearish momentum as it crosses above/below its moving average. Because the KST tends to lead price action, look for trend confirmation in the price.
The default arguments are for the daily KST. There is also the Long-Term KST, with
arguments: n=c(9, 12, 18, 24)
- where the periods are months, not days - and the
moving average periods are 6, 6, 6, and 9 months, respectively.
Josh Ulrich
The following site(s) were used to code/document this indicator:
http://www.pring.com/index.html
http://www.pring.com/movieweb/daily_kst.htm
http://www.pring.com/articles/article28.htm
http://www.pring.com/movieweb/KST_MCM.htm
See EMA
, SMA
, etc. for moving average options; and note
Warning section. See ROC
for the rate-of-change function.
See MACD
for a generic oscillator.
data(ttrc) kst <- KST(ttrc[,"Close"])