sft

2.4

Functions for Systems Factorial Technology Analysis of Data

1packages depend

3.4Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Joe HouptFirst published 2012-04-1710 releasesCRAN page ↗

A series of tools for analyzing Systems Factorial Technology data. This includes functions for plotting and statistically testing capacity coefficient functions and survivor interaction contrast functions. Houpt, Blaha, McIntire, Havig, and Townsend (2013) doi:10.3758/s13428-013-0377-3 provide a basic introduction to Systems Factorial Technology along with examples using the sft R package.

Install

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

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

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

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-sft

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-sft

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-sft

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

Health

CRAN checks

13OK

Slowest check: 2.6 min · r-devel-linux-x86_64-fedora-gcc

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

None

Vignettes

Yes

README

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-07
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

3.4K

CRAN downloads in the past year

Rank #16,004 · ~9/day · ~282/mo

Releases R versions

Daily download trend is not available in this view yet.

31830 days

70890 days

3.4K1 year

Compare downloads with other packages →

Also on91 r2u26 autocran

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Depends (4)

R >= 3.5methodsfda SuppDists

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

PERSUADE

Code & Tests

Code Composition

R 3,624 (70%)Rd 1,585 (30%)

Code characteristics

Object systems

S4 class1S4 method4

Cyclomatic complexity: 6.0 median / 49 max
Documented parameters: 97%

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

31 21 exported

Complexity

13.3 avg / 49 max

Call network

31 nodes / 30 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 (2)

Maintainer (1)

Joe Houpt

Author, Maintainer

Authors (2)

Joe Houpt

Author, Maintainer

Leslie Blaha

Author

Release timeline

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

R
R 4.6.0 released · 2026-04-24
2.4Latest
2025-04-20 · current release · 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
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
2.2-1
2018-07-08 · diff ↗
R
R 3.5.0 released · 2018-04-23
2.2-0
2017-12-18 · diff ↗
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
2.0-7
2014-10-07 · diff ↗

Show 9 earlier events

R
R 3.1.0 released · 2014-04-10
1.0-1
2013-11-11 · diff ↗
1.0-0
2013-11-08 · diff ↗
0.2-1
2013-05-27 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.1-0
2013-02-01 · diff ↗
0.0-5
2012-08-10 · diff ↗
0.0-4
2012-04-17
R
R 2.15.0 released · 2012-03-30

Package metadata

First published: 2012-04-17
Total releases: 10 / 14 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5
Bundled data: 177 KB / 1 file
Download size: 216 KB
Installed size: not tracked yet
With dependencies: not tracked yet