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treeclim

An R package for modelling tree/climate relationships. The package features:

static, moving, and evolving response and correlation functions
seasonal correlations
a "dendro-flavoured" linear model
evaluation of reconstruction skills
a test for spurious moving correlations
nice default plots

Usage

library(treeclim)
munich_spruce_calib <- dcc(muc_spruce, muc_clim)
plot(munich_spruce_calib)
skills(munich_spruce_calib)

See the docs and the wiki for details.

Citation

Zang, C., and F. Biondi. 2015. treeclim: an R package for the numerical calibration of proxy-climate relationships. Ecography 38:431–436.

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Version

Install

install.packages('treeclim')

Monthly Downloads

174

Version

2.0.6.0

License

GPL-3

Issues

Pull Requests

Stars

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Repository

https://github.com/cszang/treeclim

Maintainer

Last Published

February 8th, 2022

Functions in treeclim (2.0.6.0)

Create the correct data format for variable selection

Response and correlation function analysis

Dendro-flavoured linear model

Get positions and names for months

make_range_list

deconstruct call to modifier into list

Exclude months from analysis

correct_continuous

Correct continuous month specifications

Check if all months are between -24 and 12 (previous and current december)

Eval a single list of specifications

Tree-Ring Chronology of a Spruce Population near Munich

Modeled Tree-Ring Chronology of a Spruce Population near Munich

Gershunov test for spurious low-frequency modulations

Shorten month names

Tree-Ring Chronology of a Pine Population at Visdalen, Norway

Monthly Precipitation Sums for Norway

shifts a month 0, 1, or 2 years back

Deparse list structure from month specification and return parameter set

Tree-Ring Chronology of a Pine Population at Penota, Spain

Monthly Precipitation Sums for Spain

initialize data structure for bootstrapping

Monthly Mean Temperature and Total Precipitation for Forstenrieder Park, Munich

Evaluate reconstruction skills using split-calibration

treeclim-modifiers

Modifiers for climate parameter selection

Monthly Temperature Means for Norway

unify_selection

unify selections to handle "classic" (bootRes-style) selections

Monthly Temperature Means for Spain

Tree-Ring Chronology of a Spruce Population at Rothenburg ob der Tauber

apply_var_names

(re)name climate variable

Significance test for bootstrapped coefficients

moving response and correlation function

Monthly Precipitation Sums for Rothenburg ob der Tauber, Germany

(bootstrapped) response function

Check if month specification is continuous

(bootstrapped) correlation function

Trace the temporal development of response or correlation coefficients

evolving response and correlation function

Seasonal (partial) correlation analysis

Truncate climate and tree data to common interval

treeclim-shifters

Shift months one or two years back

Monthly Temperature Means for Rothenburg ob der Tauber, Germany

Make list of parameter matrices from climate input data