sinusoid {season}R Documentation

Plot a sinusoid

Description

Plots a sinusoid over 0 to 2π.

Usage

sinusoid(amplitude,frequency,phase,...)

Arguments

amplitude the amplitude of the sinsuoid (its maximum value).
frequency the frequency of the sinusoid in 0 to 2π (number of cycles).
phase the phase of the sinusoid (location of the peak).
... additional arguments passed to the plot.

Details

Sinusoidal curves are very useful for modelling seasonal data. A sinusoid is plotted using the equation: Acos(ft-P), t=0,...,2 π, where A is the amplitude, f is the frequency, t is time and P is the phase.

Author(s)

Adrian Barnett a.barnett<at>qut.edu.au

References

Barnett, A.G., Dobson, A.J. (2010) Analysing Seasonal Health Data. Springer.

Examples

sinusoid(amplitude=1,frequency=1,phase=1)

[Package season version 0.2-3 Index]