runSum {TTR} | R Documentation |
Analysis of Running/Rolling/Moving Windows
Description
Various functions to analyze data over a moving window of periods.
Usage
runSum(x, n = 10, cumulative = FALSE)
runMin(x, n = 10, cumulative = FALSE)
runMax(x, n = 10, cumulative = FALSE)
runMean(x, n = 10, cumulative = FALSE)
runMedian(x, n = 10, non.unique = "mean", cumulative = FALSE)
runCov(x, y, n = 10, use = "all.obs", sample = TRUE, cumulative = FALSE)
runCor(x, y, n = 10, use = "all.obs", sample = TRUE, cumulative = FALSE)
runVar(x, y = NULL, n = 10, sample = TRUE, cumulative = FALSE)
runSD(x, n = 10, sample = TRUE, cumulative = FALSE)
runMAD(
x,
n = 10,
center = NULL,
stat = "median",
constant = 1.4826,
non.unique = "mean",
cumulative = FALSE
)
wilderSum(x, n = 10)
Arguments
x |
Object coercible to xts or matrix. |
n |
Number of periods to use in the window or, if
|
cumulative |
Logical, use from-inception calculation? |
non.unique |
One of 'mean', 'max', or 'min'; which compute their respective statistics for the two middle values of even-sized samples. |
y |
Object coercible to xts or matrix. |
use |
Only |
sample |
Logical, sample covariance if |
center |
The values to use as the measure of central tendency, around
which to calculate deviations. The default ( |
stat |
Statistic to calculate, one of 'median' or 'mean' (e.g. median absolute deviation or mean absolute deviation, respectively.) |
constant |
Scale factor applied to approximate the standard deviation. |
Value
A object of the same class as x
and y
or a vector (if
try.xts
fails).
- runSum
returns sums over a n-period moving window.
- runMin
returns minimums over a n-period moving window.
- runMax
returns maximums over a n-period moving window.
- runMean
returns means over a n-period moving window.
- runMedian
returns medians over a n-period moving window.
- runCov
returns covariances over a n-period moving window.
- runCor
returns correlations over a n-period moving window.
- runVar
returns variances over a n-period moving window.
- runSD
returns standard deviations over a n-period moving window.
- runMAD
returns median/mean absolute deviations over a n-period moving window.
- wilderSum
retuns a Welles Wilder style weighted sum over a n-period moving window.
Author(s)
Joshua Ulrich