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fluxfinder

The goal of fluxfinder is to allow users to straightforwardly parse data files generated by infrared gas analyzers used in environmental sciences research; match data and metadata; compute greenhouse gas fluxes; and generate QA/QC plots and diagnostics.

We emphasize clear and well-documented code, good documentation, and focused functions that can be easily integrated into conventional or tidyverse-style analytical pipelines.

It is also straightforward to integrate this package's utilities with the more powerful flux-computation capabilities of the gasfluxes package.

Installation

You can install fluxfinder from CRAN...

install.packages("fluxfinder")

...or the development version of fluxfinder from GitHub with:

# install.packages("remotes")
remotes::install_github("COMPASS-DOE/fluxfinder", build_vignettes = TRUE)

Supported data file types

Currently fluxfinder provides functions to read data from:

Next steps

See the introductory vignette! That is the best and most up-to-date resource.

Citation

If you use fluxfinder in your research, please cite it! See citation("fluxfinder").

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Version

Install

install.packages('fluxfinder')

Monthly Downloads

124

Version

1.1.0

License

MIT + file LICENSE

Issues

Pull Requests

Stars

Forks

Maintainer

Stephanie Wilson

Last Published

June 21st, 2025

Functions in fluxfinder (1.1.0)

ffi_read_LGR915

Read a LGR 915-0011 data file
ffi_hm1981

Compute flux using nonlinear Hutchinson and Mosier (1981) model
ffi_read_LI7810

Read a LI-7810 data file
ffi_normalize_time

Normalize a vector of times
ffi_read_EGM4

Read an EGM-4 data file
ffi_qaqc

Generate a QA/QC document
ffi_compute_fluxes

Compute fluxes for multiple groups (measurements)
ffi_metadata_match

Match metadata info with a vector of data timestamps
ffi_fit_models

Fit various models to gas concentration data
ffi_read_PicarroG2301

Read a Picarro G2301 data file
ideal-gas-law

Convert gas concentration to quantity using the Ideal Gas Law
ffi_read_LI7820

Read a LI-7820 data file
ffi_read_LI850

Read a LI-850 data file
ffi_read_LIsmartchamber

Read a LI-8200-01S (smart chamber) data file
ffi_read_LI78x0

Internal utility function to read LI-78x0 files
ffi_isquiet

Check if fluxfinder.quiet option is TRUE