sinusoid {season} | R Documentation |
Plots a sinusoid over 0 to 2π.
sinusoid(amplitude,frequency,phase,...)
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. |
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.
Adrian Barnett a.barnett<at>qut.edu.au
Barnett, A.G., Dobson, A.J. (2010) Analysing Seasonal Health Data. Springer.
sinusoid(amplitude=1,frequency=1,phase=1)