R Observatory: Metrics for lsei version 1.3-1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

lsei

1.3-1Package record

Solving Least Squares or Quadratic Programming Problems under Equality/Inequality Constraints

6packages dependsuggested by 1

12.2Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Yong WangCRAN page ↗Website ↗

It contains functions that solve least squares linear regression problems under linear equality/inequality constraints. Functions for solving quadratic programming problems are also available, which transform such problems into least squares ones first. It is developed based on the 'Fortran' program of Lawson and Hanson (1974, 1995), which is public domain and available at https://www.netlib.org/lawson-hanson/.

Install

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

install.packages("lsei", 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-lsei

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-lsei

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-lsei

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 3.5 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-05-24
WARNING12 OK, 1 WARNING2026-05-13
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.3-1

READMENoVignettesNoNEWSNoCitation fileNoWebsiteYes

Help pages: 5
Examples that run: 100%5 run in a plain check
Exported functions with examples: 100%
Documented parameters: 96%
Return-value docs: 100%
Help pages citing references: 60%

How these are measured

Downloads

12.2K

CRAN downloads in the past year

Rank #3,517 · ~33/day · ~1K/mo

Releases R versions

Daily download trend is not available in this view yet.

98230 days

3K90 days

12.2K1 year

Compare downloads with other packages →

Also on470 r2u1 autocran25.7K conda_forge161 c2d4u

How downloads are counted

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Installing lsei adds no packages beyond those that come with R.

Depends (0)

none

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

6direct

1indirect

Depends 2 · Imports 4

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

Correlplot npsurv fastFMM CNSigs nspmix MetabolSSMF

Suggests, most downloaded first

ivmte

How these are counted

Code & Tests

People & History

People (3)

Yong Wang

Author, Maintainer since 1.1-0 (2015)

Richard J. Hanson

Author

Charles L. Lawson

Author

Releases (6)

Pick two releases to compare their code metrics.

1.3-1Latest
record
2026-05-15 · current release · diff ↗
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
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
unarchivedReturned to CRAN
2020-09-17
1.3-0
record
2020-09-17 · diff ↗
archivedRemoved from CRAN
2020-05-19
orphanedOrphaned by its maintainer
2020-05-06
check problems were not corrected despite reminders
1.2-0.1
record
2020-05-06 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.2-0
record
2017-10-23 · diff ↗ ·
added 2 exports
indx, matMaxs

Show 5 earlier eventsHide 5 earlier events

R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
1.1-1
record
2015-10-07 · diff ↗ ·
added 2 exports
qp, pnnqp
1.1-0
record
2015-09-27
R
R 3.2.0 released · 2015-04-16

Package metadata

First published: 2015-09-27
Total releases: 6 / 11 yrs
License: GPL (>= 2) OSI
Download size: 38 KB

Appears in task views

Optimization and Mathematical Programming

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("lsei")

Format

Wang, Y., Hanson, R. J., & Lawson, C. L. (2026). lsei: Solving Least Squares or Quadratic Programming Problems under Equality/Inequality Constraints (Version 1.3-1) [Computer software]. https://doi.org/10.32614/CRAN.package.lsei

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for lsei version 1.3-1 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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