FFTrees

2.1.0

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

0packages depend

10Kdownloads / year

67.0%test coverage

13/13checks pass

Overview

About

Maintained by Hansjoerg NethFirst published 2016-07-1223 releasesCRAN page ↗GitHub ↗

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.

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.

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).

Health

CRAN checks

13OK

Slowest check: 10.2 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.04

67.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-05-02
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-25
11 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,913 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 97%
Return-value docs: 100%
References docs: 13%

Downloads

10K

CRAN downloads in the past year

Rank #9,684 · ~27/day · ~836/mo

Releases R versions

Daily download trend is not available in this view yet.

31730 days

1.1K90 days

10K1 year

Compare downloads with other packages →

Also on155 r2u33 autocran2.3K conda_forge

Repository

GitHub ↗ ndphillips/fftrees

137Stars

25Forks

13Open issues

1Open PRs

9Releases

2,270Commits

10Contributors

2,270 commits · Last activity 2026-05-02 · 0% stars, 30d

Stars over time

2025-03-03 · 1342026-07-07 · 137

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/ndphillips/fftrees on 2026-07-19.

Continuous integration (1)

GitHub Actions

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

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.

Code & Tests

Code Composition

R 15,708 (66%)Rd 3,274 (14%)Vignettes 2,729 (11%)Other 2,094 (9%)

Code characteristics

Object systems

S34

Cyclomatic complexity: 5.0 median / 130 max
Test cases: 19 / 0.04 per code line

Test coverage

Line coverage

67%

Expression

60.5%

Tests / Examples

67.0% / 68% ex

Functions

71 25 exported

Complexity

10.5 avg / 130 max

Call network

71 nodes / 101 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

71 functions

Function	Cyclo	Coverage
FFTrees.guide exp	1	0%
describe_data exp	1	0%
inwords exp	3	0%
select_nodes exp	11	0%
add_quotes	1	0%
all_combinations	6	0%

Datasets

Bundled datasets · 16

Name	Class	Rows × Cols	Also ships in
blood	data.frame	748 × 5	–
breastcancer	tbl_df/tbl/data.frame	683 × 10	–
car	data.frame	1,728 × 7	–
contraceptive	data.frame	1,473 × 10	–
creditapproval	data.frame	690 × 16	–
fertility	data.frame	100 × 10	–
forestfires	data.frame	517 × 13	–
heart.test	tbl_df/tbl/data.frame	153 × 14	–
heart.train	tbl_df/tbl/data.frame	150 × 14	–
heartdisease	tbl_df/tbl/data.frame	303 × 14	–
iris.v	data.frame	150 × 5	–
mushrooms	data.frame	8,124 × 23	–
sonar	data.frame	208 × 61	–
titanic	data.frame	2,201 × 4	–
voting	data.frame	434 × 17	–
wine	data.frame	6,497 × 13	–

People & History

People (4)

Maintainer (1)

Hansjoerg Neth

Author, Maintainer · added in 1.3.2

Authors (4)

Hansjoerg Neth

Author, Maintainer · added in 1.3.2

Wolfgang Gaissmaier

Author · added in 1.7.0

Nathaniel Phillips

Author

Jan Woike

Author · added in 1.3.2

Listed in earlier versions (1)

Wolfgang Gaissmaer

no longer listed · 1.3.2 to 1.6.6

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
2.1.0Latest
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
2023-06-06 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.9.0
2023-02-08 · diff ↗
1.8.0
2023-01-06 · diff ↗
1.7.5
2022-09-15 · diff ↗
1.7.0
2022-08-31 · diff ↗
1.6.6
2022-07-18 · diff ↗
1.6.5
2022-07-18 · diff ↗
unarchivedReturned to CRAN
2022-07-18
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 events

1.5.5
2020-06-08 · diff ↗
unarchivedReturned to CRAN
2020-06-08
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
2018-09-15 · diff ↗
R
R 3.5.0 released · 2018-04-23
1.3.5
2017-11-02 · diff ↗
1.3.4
2017-08-28 · diff ↗
1.3.3
2017-07-11 · diff ↗
1.3.2
2017-06-28 · diff ↗
1.2.3
2017-05-04 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.2.2
2017-04-18 · diff ↗
1.1.8
2016-10-08 · diff ↗
1.1.6
2016-09-10 · diff ↗
1.1.4
2016-08-23 · diff ↗
1.1.3
2016-08-16 · diff ↗
1.1.1
2016-07-22 · diff ↗
1.1.0
2016-07-19 · diff ↗
1.0.1
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
Installed size: not tracked yet
With dependencies: not tracked yet

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