# sinusoid: Plot a Sinusoid In season: Seasonal Analysis of Health Data

## Description

Plots a sinusoid over 0 to 2π.

## Usage

 1 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 useful for modelling seasonal data. A sinusoid is plotted using the equation: A\cos(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)

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