Prepare tree-ring data for downstream analysis — prepare_samples

This function prepares tree-ring data including ring-width measurements, and optionally computes basal area increment (BAI) and merges climate variables.

prepare_samples_clim(dt.samples_trt, dt.clim = NULL, calbai = TRUE)

Arguments

dt.samples_trt: A list of tree-ring data formatted by CFS_format().
dt.clim: An optional data frame containing climate variables, joined by site_id and year. Default is NULL.
calbai: Logical. If TRUE, basal area increment (BAI) is computed. Default is TRUE.

Value

A data frame or data.table containing tree-ring measurements, optionally including basal area increment and merged climate variables.

Examples


# loading processed data
dt.samples_trt <- readRDS(system.file("extdata", "dt.samples_trt.rds", package = "growthTrendR"))
# climate
dt.clim <- data.table::fread(system.file("extdata", "dt.clim.csv", package = "growthTrendR"))
# pre-data for model
dt.samples_clim <- prepare_samples_clim(dt.samples_trt, dt.clim)