refund

0.1-40

Regression with Functional Data

26packages depend

68.7Kdownloads / year

36.2%test coverage

13/13checks pass

Overview

About

Maintained by Julia WrobelFirst published 2010-08-1842 releasesCRAN page ↗GitHub ↗

Methods for regression for functional data, including function-on-scalar, scalar-on-function, and function-on-function regression. Some of the functions are applicable to image data.

Install

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

install.packages("refund", 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("refunders/refund")

Development version from refunders/refund. 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-refund

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-refund

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-refund

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

Health

CRAN checks

13OK

Slowest check: 10.7 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.14

36.2%

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
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 43%
Documented parameters: 90%
Return-value docs: 100%
References docs: 31%

Downloads

68.7K

CRAN downloads in the past year

Rank #1,805 · ~188/day · ~5.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.6K30 days

14.6K90 days

68.7K1 year

Compare downloads with other packages →

Also on248 r2u37 autocran3.2K conda_forge112 c2d4u

Repository

GitHub ↗ refunders/refund

51Stars

27Forks

40Open issues

2Open PRs

0Releases

804Commits

27Contributors

804 commits · Last activity 2026-07-08 · 0% stars, 30d

Stars over time

2025-07-18 · 472026-07-07 · 51

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/refunders/refund on 2026-07-19.

Continuous integration (2)

GitHub ActionsTravis CI

CRAN release process (2)

cran-comments.mdrevdep/

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

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (17)

fdaMatrixlatticebootmgcvMASSmagicnlmegamm4 lme4 RLRsimsplinesgrpreg ggplot2statspbsmethods

LinkingTo (0)

none

Suggests (3)

RColorBrewer reshape2 testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

26direct

6indirect

funmediation sparseFLMM MECfda MJMbamlss SCoRES fastFGEE fastFMM fgdiR fmi longsurr mMARCH.AC mxfda refund.shiny refundBayes rmfanova FDboost HRW fPASS ggkodom ghcm gmfamm mlr runDRT spfda tf tidyfun

Code & Tests

Code Composition

R 28,658 (71%)Rd 11,763 (29%)

Code characteristics

Object systems

S337

Cyclomatic complexity: 4.0 median / 88 max
Test cases: 117 / 0.14 per code line

Test coverage

Line coverage

36%

Expression

32.1%

Tests / Examples

36.2% / 24% ex

Functions

244 64 exported

Complexity

9.3 avg / 88 max

Call network

244 nodes / 211 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

244 functions

Function	Cyclo	Coverage
.smooth.spec exp	20	0%
af exp	17	0%
af_old exp	15	0%
bayes_fosr exp	11	0%
ccb.fpc exp	10	0%
cmdscale_lanczos exp	19	0%

Datasets

Bundled datasets · 6

Name	Class	Rows × Cols	Also ships in
DTI	data.frame	382 × 9	–
DTI2	data.frame	340 × 5	–
PEER.Sim	data.frame	400 × 4	–
content	data.frame	4,405 × 10	–
gasoline	data.frame	60 × 2	in 3 packages
sofa	data.frame	520 × 7	–

People & History

People (22)

Maintainer (1)

Julia Wrobel

Author, Maintainer, Copyright holder · added in 0.1-13

Authors (13)

Julia Wrobel

Author, Maintainer, Copyright holder · added in 0.1-13

Ciprian Crainiceanu

Author · added in 2.14.0

Erjia Cui

Author · added in 0.1-26

Chongzhi Di

Author · added in 0.1-21

Jonathan Gellar

Author · added in 0.1-12

Jeff Goldsmith

Author · added in 0.1-12

Jaroslaw Harezlak

Author · added in 0.1-12

Author

Author

Author

Author · added in 0.1-12

Bruce Swihart

Author · added in 0.1-12

Luo Xiao

Author · added in 0.1-12

Contributors (9)

Yakuan Chen

Contributor · added in 0.1-12

Sonja Greven

Contributor · added in 0.1-12

Lan Huo

Contributor · added in 0.1-12

Madan Gopal Kundu

Contributor

Ruonan Li

Contributor · added in 0.1-26

Zheyuan Li

Contributor · added in 0.1-28

David L. Miller

Contributor

So Young Park

Contributor · added in 0.1-14

Show 1 more contributors

Ana-Maria Staicu

Contributor · added in 0.1-15

Julia Wrobel

Author, Maintainer, Copyright holder · added in 0.1-13

Listed in earlier versions (12)

and Jeff Goldsmith

no longer listed · 2.12.0 to 0.1-3

Philip Reiss

no longer listed · 2.12.0 to 0.1-14

Philip Reiss. Contributors: Jeff Goldsmith <jgoldsmi@jhsph.edu>

no longer listed · 2.13.2 to 0.1-4

Coordinating authors: Ciprian Crainiceanu

no longer listed · 2.13.2 to 0.1-4

Philip Reiss (coordinating authors)

no longer listed · 2.14.0 to 0.1-5

Philip Reiss

no longer listed · 2.15.2 to 0.1-11

Yihong Zhao

no longer listed · 2.15.2 to 0.1-11

Matt McLean

no longer listed · 3.0.0 to 0.1-11

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
0.1-40Latest
2026-03-21 · current release · diff ↗
0.1-38
2025-11-17 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.1-37
2024-09-20 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.1-35
2024-02-14 · diff ↗
0.1-34
2023-12-07 · diff ↗
0.1-33
2023-11-14 · diff ↗
0.1-32
2023-07-23 · diff ↗
0.1-31
2023-06-29 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.1-30
2023-03-26 · diff ↗
0.1-29
2023-01-17 · diff ↗
0.1-28
2022-10-06 · diff ↗
R
R 4.2.0 released · 2022-04-22

Show 47 earlier events

0.1-26
2022-04-16 · diff ↗
0.1-24
2021-07-01 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.1-23
2020-12-04 · diff ↗
0.1-22
2020-09-04 · diff ↗
unarchivedReturned to CRAN
2020-09-04
archivedRemoved from CRAN
2020-08-26
check issues were not corrected in time
R
R 4.0.0 released · 2020-04-24
0.1-21
2019-12-09 · diff ↗
R
R 3.6.0 released · 2019-04-26
0.1-17
2018-05-15 · diff ↗
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
0.1-16
2016-08-03 · diff ↗
0.1-15
2016-07-11 · diff ↗
R
R 3.3.0 released · 2016-05-03
0.1-14
2016-01-28 · diff ↗
0.1-13
2015-09-08 · diff ↗
0.1-12
2015-08-06 · diff ↗
R
R 3.2.0 released · 2015-04-16
0.1-11
2014-06-28 · diff ↗
0.1-10
2014-05-09 · diff ↗
R
R 3.1.0 released · 2014-04-10
3.0.3
2013-12-06 · diff ↗
0.1-9
2013-12-06 · diff ↗
0.1-8
2013-07-18 · diff ↗
3.0.2
2013-07-15 · diff ↗
0.1-7
2013-04-08 · diff ↗
R
R 3.0.0 released · 2013-04-03
3.0.0
2013-04-01 · diff ↗
0.1-6
2012-07-26 · diff ↗
2.15.2
2012-07-20 · diff ↗
R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
0.1-5
2011-10-20 · diff ↗
2.14.0
2011-10-18 · diff ↗
0.1-4
2011-07-23 · diff ↗
2.13.2
2011-07-19 · diff ↗
0.1-3
2011-05-15 · diff ↗
2.13.1
2011-05-11 · diff ↗
R
R 2.13.0 released · 2011-04-13
0.1-2
2010-12-17 · diff ↗
0.1-1
2010-11-12 · diff ↗
R
R 2.12.0 released · 2010-10-15
0.1-0
2010-08-18 · diff ↗
2.12.0
2010-08-16
R
R 2.11.0 released · 2010-04-22

Package metadata

First published: 2010-08-18
Total releases: 42 / 16 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 4.1.0
Bundled data: 1.3 MB / 9 files
Download size: 1.7 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Functional Data Analysis

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