The Digital Collaboratory for Cultural Dendrochronology (DCCD) is a European web-based repository of tree-ring data and metadata. The content is derived from cultural-heritage and (palaeo-)ecological studies of objects and sites dating from 6000 BC to present times.The goals of the collaboratory are: Version 1.4.0 onwards of this popular library for R supports basic reading and writing of TRi Da S files.This results in the cambium cells becoming smaller and thicker-walled.By winter, when the sap finally stops flowing, a smooth dark ring marks the end of the tree’s annual growth.TRi CYCLE is available as a standalone desktop application for Windows, Mac and Linux.It is also available as a library for incorporation into other applications.The Velmex "TA" system is specifically designed for the researcher to perform non-contact measurement analysis. VRO-TAB2 remote reset and send remote input module *Components sold separately The Velmex system does not include a microscope. Grissino-Mayer's Ultimate Tree-Ring Web Pages (First Class Information Site) Web Site: University of Arizona - The Laboratory of Tree-Ring Research Cornell University - Cornell Tree-Ring Laboratory International Tree-Ring Data Bank James Cook University, Australia - Tropical Dendrochronology Laboratory Lamont-Doherty Earth Observatory - Tree Ring Research University of Nevada - Dendro Lab Bolin Centre for Climate Research - Stockholm University The Tree Ring Society University of Tennessee - Laboratory of Tree-Ring Science These are just a few of the many universities and organizations that use the Velmex TA Measuring System for tree-ring research.Since it's introduction, the Velmex "TA" system has been the standard of North America's Dendrological Research Community. One micron (0.001mm) resolution linear encoder integrated to the Uni Slide assembly. Velmex VRO™ Encoder Readout for connection to the linear encoder and interface serially to a computer for measurement recording/logging. They focus on different research areas including the study of the climate and climate change, other environmental research, dating wooden objects and structures, and other archaeological research.
Tree-ring analysis requires observation and pattern recognition.
The TRL and Columbia University are not responsible for what you do with these programs and will not make any claim for or against results from experiments you perform with them.
At the same time we are not responsible for the training or support of these programs.
I present a new software that links a program for image analysis (Sigma Scan), one for spreadsheets (Excel) and one for statistical analysis (R) for applications of tree-ring analysis.
The first macro measures ring width marked by the user on scanned images, stores raw and detrended data in Excel and calculates the distance to the pith and inter-series correlations.