This package was removed from CRAN on 2025-12-17. Its history is shown below.

Reason: the maintainer's request

Details below reflect version 0.4.5, its last release before removal.

Ryacas0

0.4.5

Legacy 'Ryacas' (Interface to 'Yacas' Computer Algebra System)

0packages depend

–downloads / year

–test coverage

–checks pass

Overview

About

Maintained by Mikkel Meyer Andersen4 releasesCRAN page ↗GitHub ↗

A legacy version of 'Ryacas', an interface to the 'yacas' computer algebra system (http://www.yacas.org/).

Install

R (source archive)pak (dev)Ubuntu (r2u)openSUSE (OBS)

url <- "https://cran.r-project.org/src/contrib/Archive/Ryacas0/Ryacas0_0.4.5.tar.gz"
pkgFile <- "Ryacas0_0.4.5.tar.gz"
download.file(url, pkgFile)
install.packages(pkgFile, type = "source", repos = NULL)

This package is no longer on CRAN, so install.packages() cannot fetch it by name. This downloads the last archived source (0.4.5) and builds it locally. Install its dependencies first, and note that building from source needs the usual compiler toolchain.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("r-cas/ryacas0")

Development version from r-cas/ryacas0. 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-ryacas0

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

# 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-Ryacas0

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

Health

CRAN checks

CRAN check results are not tracked yet.

Code health

Yes

Tests · ratio 0.13

not tracked

Coverage

98%

Documentation · exports

Dependencies · direct

Documentation

READMEYes · 271 wordsVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 90%
Documented parameters: 100%
Return-value docs: 57%
References docs: 17%

Downloads

Releases R versions

Daily download trend is not available in this view yet.

Compare downloads with other packages →

Also on437 r2u32 autocran55 c2d4u

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.3.0

Imports (5)

methodsRcppstatssettings xml2

LinkingTo (1)

Rcpp

Suggests (8)

devtools exams knitrMatrixpkgload rmarkdown igraph testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

–indirect (not tracked)

Nothing depends on this yet.

Code & Tests

People & History

People (7)

Maintainer (1)

Mikkel Meyer Andersen

Author, Maintainer, Copyright holder

Authors (6)

Mikkel Meyer Andersen

Author, Maintainer, Copyright holder

Rob Goedman

Author, Copyright holder

Gabor Grothendieck

Author, Copyright holder

Søren Højsgaard

Author, Copyright holder

Grzegorz Mazur

Author, Copyright holder

Ayal Pinkus

Author, Copyright holder

Mikkel Meyer Andersen

Author, Maintainer, Copyright holder

Rob Goedman

Author, Copyright holder

Gabor Grothendieck

Author, Copyright holder

Søren Højsgaard

Author, Copyright holder

Grzegorz Mazur

Author, Copyright holder

Ayal Pinkus

Author, Copyright holder

Nemanja Trifunovic

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
archivedRemoved from CRAN
2025-12-17
the maintainer's request
0.4.5
2025-09-04 · 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
0.4.4
2023-01-12 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.4.3
2020-09-29 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.4.2
2019-10-09
R
R 3.6.0 released · 2019-04-26

Package metadata

Total releases: 4
License: GPL-2 OSI
Minimum R: ≥ 3.3.0
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

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