Toolkit for Data Processing, Quality, and Statistical Models

Offers tools for data formatting, anomaly detection, and classification of tree-ring data using spatial comparisons and cross-correlation. Supports flexible detrending and climate–growth modeling via generalized additive mixed models (Wood 2017, ISBN:978-1498728331) and the 'mgcv' package (< https://CRAN.R-project.org/package=mgcv>), enabling robust analysis of non-linear trends and autocorrelated data. Provides standardized visual reporting, including summaries, diagnostics, and model performance. Compatible with '.rwl' files and tailored for the Canadian Forest Service Tree-Ring Data (CFS-TRenD) repository (Girardin et al. (2021) ), offering a comprehensive and adaptable framework for dendrochronologists working with large and complex datasets.


This package can be installed using the remotes package: remotes::install_github("CFS-treering/growthTrendR")

Reference manual

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install.packages("growthTrendR")

0.2.2 by Xiao Jing Guo, 8 months ago


Browse source code at https://github.com/cran/growthTrendR


Authors: Xiao Jing Guo [aut, cre] , Martin Girardin [aut] , Juha Metsaranta [aut] , David Gervais [aut] , Elizabeth Campbell [aut]


Documentation:   PDF Manual  


GPL-3 license


Imports data.table, stringr, stats, mgcv, ggplot2, nlme, patchwork, terra, raster, furrr, future, htmltools, curl, dplyr

Suggests knitr, geosphere, ggeffects, ggforce, gstat, scales, purrr, parallel, MuMIn, rmarkdown, rstudioapi, MASS, sf, sp, spdep, magick, gt, kableExtra, httr


See at CRAN