getTrac                 Compute tracheidograms
ringPlot                Plot intra-ring variation of tracheid features
                        (with the possibility of plotting a climatic
                        variable)
sw                      Monthly soil moisture data for the period
                        1901-2013.
tch                     Raw light intensity for two years (2010 and
                        2013) of Pinus pinaster
tracheider              Compute standardized tracheidograms
