Dendrochronological Software and Data Sources
Dendrochronologists use a wide variety of computer software applications to conduct their research. Information on where to find descriptions and links to common software packages and online databases can be found on the Resources page. The LTRR maintains no public online databases. Only software maintained by the LTRR is listed below. Some programs are not regularly updated. Contact authors for more information.
DPL - Dendrochronology Program Library (author Richard Holmes)
This classic suite of over 30 data analysis tools was written by the late Richard Holmes. Each program is available as a free executable program, but with no source code. There is no current mechanism to update these programs.
Precon 5.1 (author Hal Fritts)
This software analyzes tree-ring responses to climatic variation (dendroclimatology) using a method called response function analysis. Although most of the software is free, graphical output relies on commercially licensed software. Existing users can upgrade to new versions, but new users must buy a run-time license.
Precon 6 (author Hal Fritts)
An updated version of the response function parts of PRECON.
Treering 2000 and 3.0 (authors Hal Fritts and others)
This is a process model of conifer cambial activity and ring structure.
Matlab® Toolbox (author Dave Meko)
This collection of tree-ring analysis and plotting functions requires the commercially licensed software MATLAB®, version 5.3 or later.
Pageplot Using Minitab® (author Paul Sheppard)
This macro file plots time series data, including measurement series with their detrending lines. It requires MITITAB® licensed software.