dplR (version 1.5.3)

rwl.stats: Calculate Descriptive Statistics on Ring-Width Series

Description

This function calculates descriptive statistics on a data.frame of raw or detrended ring-width series.

Usage

rwl.stats(rwl)

Arguments

rwl

a data.frame with (usually) raw ring-width series as columns and years as rows such as that produced by read.rwl. It is sometimes desirable to run this on detrended (e.g., rwi) data

Value

• A data.frame containing descriptive stats on each "series". These are the first and last year of the series as well as the length of the series ("first", "last", "year"). The mean, median, standard deviation are given ("mean", "median", "stdev") as are the skewness, two measures of sensitivity, the Gini coefficient, and first order autocorrelation ("skew", "sens1", "sens2", "gini.coef", "ar1").

Details

This calculates a variety of descriptive statistics commonly used in dendrochronology (see below). Users unfamiliar with these should see Cook and Kairiukstis (1990) and Fritts (2001) for further details.

References

Cook, E. R. and Kairiukstis, L.A. (1990) Methods of Dendrochronology: Applications in the Environmental Sciences. Springer. ISBN-13: 978-0792305866. Fritts, H. C. (2001) Tree Rings and Climate. Blackburn. ISBN-13: 978-1930665392.

See Also

rwi.stats, read.rwl

Examples

data(ca533)
rwl.stats(ca533)