getltrend: Returns linear trend in 'signal' time-serie

In bartekkroczek/detrendeR: Remove linear or polynomial trend from signal

Returns linear trend in 'signal' time-serie

Description

This function detects a linear trend and returns it as a vector. The time can be recognised if the signal is a time-serie object. This function is a wrapper for gettrend().

Usage

getltrend(signal, time = NULL)

Arguments

signal	A vector or a time-serie object. Time-sorted values of signal containing trend.
time	A positive real number. Time span of the signal in base units.

Value

Returns an object of a class "trend" containing vector of values of the estimated trend.

The object also contains:

values	original values of the signal
detrended	the difference between the original values of the signal and the trend
time	vector of the time domain of the signal
model	model used to predct trend for purpose of estimating the trend on new data

See Also

gettrend(), plot.trend(), time.trend(), detrended(), orisignal(), predict.trend()

Examples

x <- sin(seq(0, 6, length.out=100)) + rnorm(100)
trend1 <- getltrend(x, time=1)
detrended(trend1)
predict(trend1, newtime=seq(1, 2, length.out=100))

data(austres)
trend2 <- getltrend(austres)
plot(trend2)

bartekkroczek/detrendeR documentation built on March 26, 2022, 10:40 p.m.