Dykstra

1.0-0

Quadratic Programming using Cyclic Projections

0packages depend

2.5Kdownloads / year

–test coverage

11/13checks pass

Overview

About

Maintained by Nathaniel E. HelwigFirst published 2018-02-091 releasesCRAN page ↗

Solves quadratic programming problems using Richard L. Dykstra's cyclic projection algorithm. Routine allows for a combination of equality and inequality constraints. See Dykstra (1983) doi:10.1080/01621459.1983.10477029 for details.

Install

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

install.packages("Dykstra", 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-dykstra

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-Dykstra

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

Health

CRAN checks

2NOTE11OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 40 s · r-devel-windows-x86_64

Check history

NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation signals are not tracked yet for this package.

Downloads

2.5K

CRAN downloads in the past year

Rank #19,823 · ~7/day · ~206/mo

Dykstra Releases R versions

Daily download trend is not available in this view yet.

19230 days

58690 days

2.5K1 year

Compare downloads with other packages →

Also on98 r2u15 autocran79 c2d4u

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (0)

Author records are not tracked yet for this package.

Listed in earlier versions (1)

Nathaniel E. Helwig

no longer listed · 1.0-0

Package Timeline

1 release. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
1.0-0Latest
2026-03-10 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2018-02-09
Total releases: 1 / 8 yrs
License: GPL (>= 2) OSI
Download size: 4.2 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Optimization and Mathematical Programming

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