SimRem {greenbrown}R Documentation

Simulate the short-term variability component of a surrogate time series

Description

The function simulates the short-term variability component (remainder component) of a time series (remainder component) based on normal-distributed random values.

Usage

SimRem(sd = 0.05, range = sd * 3, n = 360, start = c(1982, 1), 
    freq = 12)

Arguments

sd

standard deviation of short-term anomalies

range

range of short-term anomalies

n

length of the time series

start

beginning of the time series (i.e. the time of the first observation). The default is c(1982, 1), i.e. January 1982 which is the usual start date to compute trends on long-term series of satellite observations of NDVI. See ts for further examples.

freq

The frequency of observations. The default is 12 for monthly observations. Use 24 for bi-monthly observations, 365 for daily observations or 1 for annual observations. See ts for further examples.

Value

time series of class ts

Author(s)

Matthias Forkel <matthias.forkel@geo.tuwien.ac.at> [aut, cre]

See Also

SimTs

Examples

Rt <- SimRem(sd=0.02, range=0.08)
plot(Rt)

[Package greenbrown version 2.4.3 Index]