The Dendrochronology Program Library in R (dplR)

dplR is a software package in the R statistical programming environment for tree-ring analyses. R is the world's preeminent open-source statistical computing environment where users can contribute packages, which are freely available on the internet. dplR can read standard decadal-format files and perform several standard analyses.

These include interactive detrending, chronology building, and calculates standard descriptive statistics. The package can also produce a variety of publication quality plots.

Here is a link to a small gallery of dplR plots.

Here is the link to the library on the Comprehensive R Archive Network where you can download source or precompiled binaries. Within R, dplR can be installed, loaded, and the help pages can be seen via:

> install.packages("dplR")
> library(dplR)
> ?dplR

I make updates to dplR regularly. Please update to the current version from time to time. It's good R practice...

> update.packages()

Back to Research