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Sapwood functions

sw_model()
Model sapwood data and compute the highest posterior density interval
sw_model_plot()
Plot function for the output of sw_model()
sw_interval()
Computes the limits of the felling date range
sw_interval_plot()
Plot function for the output of sw_interval()
fd_report()
Report felling dates of individual tree-ring series
sw_combine()
Combine multiple sapwood estimates into a single felling date range
sw_combine_plot()
Plot the output of sw_combine()
sw_sum()
Compute the summed probability of multiple felling date ranges
sw_sum_plot()
Plot the output of sw_sum()

Synthetic tree-ring series

trs_pseudo_rwl()
Create a pseudo-population of tree-ring series

Tree-ring data manipulation

trs_select()
Select series from an rwl-style data frame
trs_remove()
Removes one or more series from an rwl-style data frame
trs_trim()
Trim leading and trailing rows with only NA values from a tree-ring data frame
trs_plot_rwl()
Plot all series in a tree-ring width dataframe

Tree-ring dating

trs_crossdate()
Sliding window crossdating analysis using multiple statistical methods
trs_end_date()
Assign calendar years to tree-ring series in an rwl-style data frame
trs_plot_dated()
Plot a dated tree-ring series with a reference series or chronology

Helper functions

read_fh()
Read a Heidelberg format (.fh) tree-ring file
fh_header()
Retrieve the HEADER fields of a Heidelberg format (.fh) file
cor_table()
Calculate correlation values between tree-ring series
sw_data_overview()
Overview of available sapwood data sets in the fellingdater package
sw_data_info()
Detailed information on a sapwood data set
hdi()
Compute the highest posterior density interval (hdi)
mov_av()
Compute a running mean on a time series
trs_pv()
Computes statistics to describe parallel variations between two rwl-style data frames
trs_tSt()
Compute Student's t-statistics from correlation coefficients
trs_tbp()
Compute Baillie & Pilcher-style t-values between all series in two rwl-style data frames
trs_tbp_transform()
Pre-transform tree-ring series using Baillie & Pilcher method
trs_tho()
Compute Hollstein-style t-values between all series in two rwl-style data frames
trs_tho_transform()
Pre-transform tree-ring series using Hollstein method
trs_zscore()
Standardize tree-ring series to z-scores
sgc_for_plot()
Detect synchronous growth changes between two tree-ring series ( helper for trs_plot_dated() )

Datasets

Brathen_1982
Brathen 1982 sapwood data set.
Hollstein_1980
Hollstein 1980 sapwood data set.
Miles_1997_NM
Miles 1997 sapwood data set.
Miles_1997_SC
Miles 1997 sapwood data set.
Miles_1997_WBC
Miles 1997 sapwood data set.
Pilcher_1987
Pilcher 1987 sapwood data set.
Sohar_2012_ELL_c
Sohar et al. 2012 sapwood data set.
Sohar_2012_ELL_t
Sohar et al. 2012 sapwood data set.
Sohar_2012_FWE_c
Sohar et al. 2012 sapwood data set.
Sohar_2012_FWE_t
Sohar et al. 2012 sapwood data set.
vanDaalen_NLBE
van Daalen (unpublished) sapwood data set.
vanDaalen_Norway
van Daalen (unpublished) sapwood data set.
Wazny_1990
Wazny 1990 sapwood data set.
Weitz_2025
Weitz 2025 sapwood data set.

Example data

sw_example0
Example dataset 0
sw_example1
Example dataset 1
sw_example2
Example dataset 2
sw_example3
Example dataset 3
sw_example4
Example dataset 4
sw_example5
Example dataset 5
sw_example6
Example dataset 6
sw_example7
Example dataset 7

About

fellingdater-package fellingdater
fellingdater: Tree-ring dating and estimating felling dates of historical timbers