season

R package to run seasonal analyses in time series. For details see our book "Analysing Seasonal Health Data" (2010) https://www.springer.com/gp/book/9783642107474.

Useful functions are:

• casecross for case-crossover analysis
• nscosinor to estimate non-stationary seasonal patterns using the Kalman filter
• nonlintest for a time domain test of non-linearity