One of the consequences of the computer and internet revolution is that
more and more scientists promote open source software and reproducible
research. Science should be, per definition, both open and reproducible. In
the context of statistics [Gentleman and Temple-Lang, 2004] this means that
the published article or report is not the complete scientific result. In order
for the results to be reproducible, we should also have access to the data and
to a copy of the computational environment in which the calculations were
made.