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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

154

Version

2.0.7.1

License

GPL-3

Issues

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Repository

https://github.com/cszang/treeclim

Maintainer

Last Published

December 16th, 2024

Functions in treeclim (2.0.7.1)

initialize data structure for bootstrapping

Monthly Precipitation Sums for Norway

Modeled Tree-Ring Chronology of a Spruce Population near Munich

make_range_list

deconstruct call to modifier into list

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

Monthly Mean Temperature and Total Precipitation for Forstenrieder Park, Munich

Gershunov test for spurious low-frequency modulations

Make list of parameter matrices from climate input data

Tree-Ring Chronology of a Spruce Population near Munich

Check if month specification is continuous

Monthly Temperature Means for Norway

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

Monthly Temperature Means for Rothenburg ob der Tauber, Germany

Monthly Precipitation Sums for Rothenburg ob der Tauber, Germany

Significance test for bootstrapped coefficients

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

Seasonal (partial) correlation analysis

treeclim-modifiers

Modifiers for climate parameter selection

Trace the temporal development of response or correlation coefficients

Deparse list structure from month specification and return parameter set

(bootstrapped) response function

moving response and correlation function

Monthly Precipitation Sums for Spain

Evaluate reconstruction skills using split-calibration

treeclim-shifters

Shift months one or two years back

shifts a month 0, 1, or 2 years back

evolving response and correlation function

unify_selection

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

Truncate climate and tree data to common interval

Monthly Temperature Means for Spain

(bootstrapped) correlation function

Create the correct data format for variable selection

Response and correlation function analysis

Dendro-flavoured linear model

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

apply_var_names

(re)name climate variable

Eval a single list of specifications

Exclude months from analysis

correct_continuous

Correct continuous month specifications

Shorten month names

Get positions and names for months