transformr

0.1.5

Polygon and Path Transformations

10packages depend

277.4Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Thomas Lin PedersenFirst published 2018-12-095 releasesCRAN page ↗GitHub ↗

In order to smoothly animate the transformation of polygons and paths, many aspects needs to be taken into account, such as differing number of control points, changing center of rotation, etc. The 'transformr' package provides an extensive framework for manipulating the shapes of polygons and paths and can be seen as the spatial brother to the 'tweenr' package.

Install

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

install.packages("transformr", 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("thomasp85/transformr")

Development version from thomasp85/transformr. 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-transformr

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-transformr

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-transformr

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

Health

CRAN checks

13OK

Slowest check: 1.9 min · r-devel-linux-x86_64-fedora-clang

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

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

Documentation

READMEYes · 729 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 75%
Return-value docs: 100%
References docs: 0%

Downloads

277.4K

CRAN downloads in the past year

Rank #873 · ~760/day · ~23.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

15K30 days

57.9K90 days

277.4K1 year

Compare downloads with other packages →

Also on2K r2u32 autocran4K conda_forge

Repository

GitHub ↗ thomasp85/transformr

117Stars

10Forks

8Open issues

0Open PRs

4Releases

82Commits

1Contributors

rstatsanimationdata-visualizationtweeninginterpolationmatching-shapes

82 commits · Last activity 2024-02-26

Stars over time

2025-04-01 · 1172026-07-07 · 117

Repository practices

Upstream repositoryBeta

6 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/thomasp85/transformr on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

Docs source (1)

README.Rmd

Coverage (1)

Codecov

Show all practices

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (5)

tweenr rlang sf lpSolve vctrs

LinkingTo (1)

cpp11

Suggests (2)

covr magrittr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

10direct

18indirect

cleanTS gganimate heartbeatr Isinglandr MagmaClustR contsurvplot ordbetareg tidybayes tmap tmap.cartogram

Code & Tests

People & History

People (1)

Maintainer (1)

Thomas Lin Pedersen

Maintainer, Author

Authors (1)

Thomas Lin Pedersen

Maintainer, Author

Package 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
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.1.5Latest
2024-02-26 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
0.1.4
2022-08-18 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.1.3
2020-07-05 · diff ↗
0.1.2
2020-06-19 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
0.1.1
2018-12-09
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2018-12-09
Total releases: 5 / 8 yrs
License: MIT + file LICENSE OSI
Download size: 1.8 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →