FCO

2.0.2

Flexible Cutoffs for Model Fit Evaluation in Covariance-Based Structural Models

0packages depend

83Kdownloads / year

–test coverage

12/13checks pass

Overview

About

Maintained by Thomas NiemandFirst published 2022-02-115 releasesCRAN page ↗GitHub ↗

A toolbox to derive flexible cutoffs for fit indices in 'Covariance-based Structural Equation Modeling' based on the paper by 'Niemand & Mai (2018)' doi:10.1007/s11747-018-0602-9. Flexible cutoffs are an alternative to fixed cutoffs - rules-of-thumb - regarding an appropriate cutoff for fit indices such as 'CFI' or 'SRMR'. It has been demonstrated that these flexible cutoffs perform better than fixed cutoffs in grey areas where misspecification is not easy to detect. The package provides an alternative to the tool at https://flexiblecutoffs.org as it allows to tailor flexible cutoffs to a given dataset and model, which is so far not available in the tool. The package simulates fit indices based on a given dataset and model and then estimates the flexible cutoffs. Some useful functions, e.g., to determine the 'GoF-' or 'BoF-nature' of a fit index, are provided. So far, additional options for a relative use (is a model better than another?) are provided in an exploratory manner.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("FCO", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ThomasNiemand/FCO")

Development version from ThomasNiemand/FCO. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-fco

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-FCO

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-FCO

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

1ERROR12OK

Failing flavors

ERROR r-oldrel-macos-arm64

Slowest check: 6.8 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.21

not tracked

Coverage

100%

Documentation · exports

Yes

Vignettes

Yes

README

Dependencies · direct

Check history

ERROR2026-03-10
12 OK · 0 NOTE · 0 WARNING · 2 ERROR · 0 FAILURE

Downloads

83K

CRAN downloads in the past year

Rank #14,045 · ~227/day · ~6.9K/mo

Releases R versions

Daily download trend is not available in this view yet.

30430 days

77590 days

83K1 year

Compare downloads with other packages →

Also on120 r2u33 autocran

Repository

GitHub ↗ thomasniemand/fco

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0Forks

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0Open PRs

0Releases

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.4.0

Imports (16)

checkmate cutpointr data.table doParallel dplyr foreach ggplot2 lavaan overlappingparallelPoisBinOrdNor psych rcompanion simstandard stringr tidyr

LinkingTo (0)

none

Suggests (4)

knitrMASSrmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 4,219 (80%)Rd 694 (13%)Vignettes 379 (7%)

Code characteristics

Cyclomatic complexity: 7.0 median / 47 max
Test cases: 62 / 0.21 per code line
Documented parameters: 100%

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

36 8 exported

Complexity

9.6 avg / 47 max

Call network

36 nodes / 42 edges

Test coverage has not been measured for this package yet; nodes fall back to a neutral fill.

Call graph

Open call graph →

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Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (4)

Maintainer (1)

Thomas Niemand

Author, Maintainer

Authors (1)

Thomas Niemand

Author, Maintainer

Contributors (3)

Andreas Falke

Contributor

Robert Mai

Contributor

Nadine Schröder

Contributor

Release timeline

5 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
2.0.2Latest
2026-02-26 · current release · diff ↗
2.0.1
2026-02-13 · diff ↗
2.0.0
2025-09-25 · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
0.8.0
2023-03-17 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.7.2
2022-02-11
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2022-02-11
Total releases: 5 / 4 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.4.0
Bundled data: 83 KB / 1 file
Download size: 182 KB
Installed size: not tracked yet
With dependencies: not tracked yet