This package contains several functions for analysing quarterly and monthly time series.
Unit root test: ADF, KPSS, HEGY, and CH, as well as graphics: Buys-Ballot and
seasonal cycles, among others, have been implemented to accomplish either an analytical or a
graphical analysis. Combined use of both enables the user to characterize the seasonality as
deterministic, stochastic or a mixture of them. An easy to use graphical user interface is also
provided to run some of the implemented functions.