seas: Seasonal analysis and graphics, especially for climatology
Capable of deriving seasonal statistics, such as
"normals", and analysis of seasonal data, such as departures.
This package also has graphics capabilities for representing
seasonal data, including boxplots for seasonal parameters, and
bars for summed normals. There are many specific functions
related to climatology, including precipitation normals,
temperature normals, cumulative precipitation departures and
precipitation interarrivals. However, this package is designed
to represent any time-varying parameter with a discernible
seasonal signal, such as found in hydrology and ecology.