R Observatory: Metrics for FFTrees version 2.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

FFTrees

2.1.0Package record

Generate, Visualise, and Evaluate Fast-and-Frugal Decision Trees

0packages depend

7.1Kdownloads / year

67.0%test coverage

13/13flavors OK

Overview

About

Maintained by Hansjoerg NethCRAN page ↗GitHub ↗Website ↗Issues ↗

Create, visualize, and test fast-and-frugal decision trees (FFTs) using the algorithms and methods described by Phillips, Neth, Woike & Gaissmaier (2017), doi:10.1017/S1930297500006239. FFTs are simple and transparent decision trees for solving binary classification problems. FFTs can be preferable to more complex algorithms because they require very little information, are easy to understand and communicate, and are robust against overfitting.

Changes in 2.1.0

**FFTrees** version 2.1.0 was released on CRAN [on 2025-09-03].

This version reduces non-essential functionality, increases robustness, and fixes some bugs.

Breaking changes

Deprecated all applications of non-FFT competitive algorithms (i.e., LR, SVM, RF) in FFT creation.

From now on, consider using dedicated packages (such as **parsnip** or **tidymodels**) to create and evaluate these models.

Major changes

Added support for handling NA values.

Minor changes

Plotting:

plot.FFTrees() now labels row of 2x2 confusion matrix as "Prediction" when using "test" data.
plot.FFTrees() now has a truth.labels argument which, if set, distinguishes labels of true (signal vs. noise) cases from decision outcomes.
plot.FFTrees() now has a grayscale argument which, if TRUE, creates a gray scale plot.

Show all changes in 2.1.0Hide the rest of the changes in 2.1.0

Decision costs:

Increased value of cost_cues_default from 0 to 1, so that default cue costs correspond to mcu.

Details

Fixed bug for missing plot title.
Added @aliases FFTrees-package to documentation of main FFTrees() function.
Removed redundant data_old folder.

The current development version of **FFTrees** is available at <https://github.com/ndphillips/FFTrees>.

------

From NEWS.md in the release

Install

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

install.packages("FFTrees", 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("ndphillips/FFTrees")

Development version from ndphillips/FFTrees. 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-fftrees

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-FFTrees

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-FFTrees

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 8.5 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK13 OK2026-05-02

Show 2 earlier changesHide 2 earlier changes

ERROR11 OK, 1 ERROR2026-04-25
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.1.0

READMEYes · 1,913 wordsVignettesYes · 7 · dynamicNEWSYes · 67% structured · mentions 2.1.0Citation fileYes · cites a publicationWebsiteYes · pkgdown

Help pages: 52 (4 internal)includes a package overview page
Examples that run: 100%7 run in a plain check
Exported functions with examples: 20%
Documented parameters: 97%
Return-value docs: 100%
Help pages citing references: 13%

Vignettes (7)

Accuracy statistics in FFTrees HTML
Creating FFTs with FFTrees() HTML
Examples of FFTrees HTML
Manually specifying FFTs HTML
Overview: Creating FFTs with FFTrees HTML
Tutorial: Creating FFTs for heart disease HTML
Visualising FFTs HTML

How these are measured

Downloads

7.1K

CRAN downloads in the past year

Rank #6,417 · ~20/day · ~594/mo

Releases R versions

Daily download trend is not available in this view yet.

58430 days

1.3K90 days

7.1K1 year

Compare downloads with other packages →

Also on100 r2u4 autocran1.8K conda_forge

How downloads are counted

Repository

ndphillips/fftrees ↗Account: ndphillips

138Stars

25Forks

13Open issues

1Open PRs

9Releases

2,270Commits

10Commit identities

2,270 commits · Last activity 2026-05-02 · 0% stars, 30d · Default branch at 2.1.0.9001, ahead of CRAN 2.1.0 (checked 2026-10-18) · Discussions: 1 post

Responsiveness

How these are sampled

PRs merged (all time): 99%
Median days to close, 50 most recently updated closed issues: 12
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-07-25 · 1352026-09-14 · 138

How these are measured

PracticesBeta

8 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/ndphillips/fftrees on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Governance and community (1)

The repository owner accepts GitHub Sponsors

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-05-02 · The repository has a site deploy workflow

pkgdown site last built 2026-05-02

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Installing FFTrees adds 84 packages (43 with compiled code, 54 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (1)

R >= 3.5.0

Imports (9)

caret cli dplyr knitr magrittr scales stringr testthat tibble

LinkingTo (0)

none

Suggests (3)

rmarkdown spelling tidyselect

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (4)

Hansjoerg Neth

Author, Maintainer since 1.7.0 (2022) · added in 1.3.2

Wolfgang Gaissmaier

Author · added in 1.7.0

Nathaniel Phillips

Author

Jan Woike

Author · added in 1.3.2

Previously maintained by Nathaniel Phillips (1.0.1 to 1.6.6).

Listed in earlier versions (1)

Wolfgang Gaissmaer

no longer listed · 1.3.2 to 1.6.6

Releases (23)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.1.0Latest
record
2025-09-03 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
2.0.0
record
2023-06-06 · diff ↗ ·
added 13 exports
add_fft_df, add_nodes, describe_data, drop_nodes, edit_nodes, flip_exits, get_best_tree, get_exit_type, get_fft_df, read_fft_df, reorder_nodes, select_nodes, write_fft_df
R
R 4.3.0 released · 2023-04-21
1.9.0
record
2023-02-08 · diff ↗
1.8.0
record
2023-01-06 · diff ↗
1.7.5
record
2022-09-15 · diff ↗
1.7.0
record
2022-08-31 · diff ↗
unarchivedReturned to CRAN
2022-07-18
1.6.6
record
2022-07-18 · diff ↗
1.6.5
record
2022-07-18 · diff ↗ ·
added 3 exports
fftrees_apply, fftrees_create, fftrees_define
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
archivedRemoved from CRAN
2020-07-23
check problems were not corrected in time

Show 22 earlier eventsHide 22 earlier events

unarchivedReturned to CRAN
2020-06-08
1.5.5
record
2020-06-08 · diff ↗ ·
removed 6 exports
FFForest, cuerank, grow.FFTrees, heuristic.algorithm, updateHistory, wordstoFFT

added 5 exports
fftrees_cuerank, fftrees_ffttowords, fftrees_threshold_factor_grid, fftrees_threshold_numeric_grid, fftrees_wordstofftrees
R
R 4.0.0 released · 2020-04-24
archivedRemoved from CRAN
2020-03-07
check problems were not corrected despite reminders
R
R 3.6.0 released · 2019-04-26
1.4.0
record
2018-09-15 · diff ↗ ·
removed 6 exports
apply.tree, auc, classtable, comp.pred, factclean, fan.algorithm
R
R 3.5.0 released · 2018-04-23
1.3.5
record
2017-11-02 · diff ↗ ·
added 1 export
updateHistory
1.3.4
record
2017-08-28 · diff ↗
1.3.3
record
2017-07-11 · diff ↗
1.3.2
record
2017-06-28 · diff ↗ ·
added 4 exports
fan.algorithm, heuristic.algorithm, inwords, wordstoFFT
1.2.3
record
2017-05-04 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.2.2
record
2017-04-18 · diff ↗ ·
removed 3 exports
cart.pred, fft, lr.pred

added 3 exports
FFForest, apply.tree, comp.pred
1.1.8
record
2016-10-08 · diff ↗
1.1.6
record
2016-09-10 · diff ↗ ·
removed 1 export
transparent
1.1.4
record
2016-08-23 · diff ↗ ·
removed 1 export
grow.ffts

added 2 exports
FFTrees, grow.FFTrees
1.1.3
record
2016-08-16 · diff ↗ ·
added 2 exports
factclean, showcues
1.1.1
record
2016-07-22 · diff ↗ ·
added 1 export
FFTrees.guide
1.1.0
record
2016-07-19 · diff ↗ ·
removed 3 exports
applyfft, simfft, simfftplot

added 5 exports
auc, cart.pred, grow.ffts, lr.pred, transparent
1.0.1
record
2016-07-12
R
R 3.3.0 released · 2016-05-03

Package metadata

First published: 2016-07-12
Total releases: 23 / 10 yrs
License: CC0
Minimum R: ≥ 3.5.0
Bundled data: 240 KB / 17 files
Download size: 3.2 MB

Cite

Cite this package

Run in R for the authors' entry:

citation("FFTrees")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.1017/s1930297500006239.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for FFTrees version 2.1.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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