sinusoid function

Plot a Sinusoid

Plots a sinusoid over 0 to 2$\pi$.

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

Arguments

• amplitude: the amplitude of the sinsuoid (its maximum value).
• frequency: the frequency of the sinusoid in 0 to 2$\pi$ (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: $A\cos(ft-P), t=0,\ldots,2 \pi$, where $A$ is the amplitude, $f$ is the frequency, $t$ is time and $P$ is the phase.

Examples

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

References

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

Author(s)

Adrian Barnett a.barnett@qut.edu.au