writeFIA: Write FIA tables to local directory

In rFIA: Estimation of Forest Variables using the FIA Database

Write FIA tables to local directory

Description

Write FIA.Database object to local directory as a series of .csv files representing each table. Most useful for writing merged states and temporal/spatial subsets of the database. Once written as .csv, files can be reloaded into R with readFIA().

Usage

writeFIA(db, dir, byState = FALSE, nCores = 1, ...)

Arguments

db	FIA.Database object produced from readFIA() or getFIA().
dir	directory where FIA Datatables will be stored.
nCores	numeric; number of cores to use for parallel implementation. Check available cores using detectCores. Default = 1, serial processing.
byState	logical; should tables be written out by state? Must be TRUE if planning to load data as an out-of-memory database in the future (see readFIA()).
...	other arguments to pass to data.table::fwrite().

Details

Easy, efficient parallelization is implemented with the parallel package. Users must only specify the nCores argument with a value greater than 1 in order to implement parallel processing on their machines. Parallel implementation is achieved using a snow type cluster on any Windows OS, and with multicore forking on any Unix OS (Linux, Mac). Implementing parallel processing may substantially decrease decrease free memory during processing, particularly on Windows OS. Thus, users should be cautious when running in parallel, and consider implementing serial processing for this task if computational resources are limited (nCores = 1).

Value

No return value, called to export FIA.Database object to a local directory.

Author(s)

Hunter Stanke and Andrew Finley

See Also

readFIA, getFIA

Examples

# Write the 'fiaRI' object to a temporary directory
# Replace temp_dir with the path to your directory (where data will be saved)
temp_dir = tempdir()
writeFIA(fiaRI, dir = temp_dir)

rFIA documentation built on Nov. 5, 2025, 7:31 p.m.