treering              package:datasets              R Documentation

Yearly Treering Data, -6000-1979

Description:

     Contains normalized tree-ring widths in dimensionless units.

Usage:

     treering

Format:

     A univariate time series with 7981 observations. The object is of
     class '"ts"'.

     Each tree ring corresponds to one year.

Details:

     The data were recorded by Donald A. Graybill, 1980, from  Gt Basin
     Bristlecone Pine 2805M, 3726-11810 in Methuselah Walk, California.

Source:

     Time Series Data Library: <URL:
     http://www-personal.buseco.monash.edu.au/~hyndman/TSDL/>, series
     'CA535.DAT'

References:

     For background on Bristlecone pines and Methuselah Walk, see <URL:
     http://www.sonic.net/bristlecone/>; for some photos see <URL:
     http://www.ltrr.arizona.edu/~hallman/sitephotos/meth.html>

