multitaper (version 1.0-17)

willamette: Willamette River time series

Description

Willamette River time series. Each point represents the log of the average daily flow over a one month period from October, 1950, to August 1983. The sampling time is 1/12 year and the Nyquist frequency is 6 cycles per year. The data is from the companion code to “Spectral Analysis for the Physical Applications” (1993) and was originally compiled by the US Geological Survey.

Usage

willamette

Format

A vector containing 395 observations

References

Percival, D.B. and Walden, A.T. (1993) Spectral analysis for physical applications. Cambridge University Press.

Examples

data(willamette)
# time series object, January = year.0, December = year.917
will.ts <- ts(data=willamette, start=(1950+9/12), freq=12)