R Observatory: Metrics for nlsic version 1.2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

nlsic

1.2.0Package record

Non Linear Least Squares with Inequality Constraints

2packages depend

4.5Kdownloads / year

44.2%test coverage

13/13flavors OK

Overview

About

Maintained by Serguei SokolCRAN page ↗GitHub ↗Issues ↗

We solve non linear least squares problems with optional equality and/or inequality constraints. Non linear iterations are globalized with back-tracking method. Linear problems are solved by dense QR decomposition from 'LAPACK' which can limit the size of treated problems. On the other side, we avoid condition number degradation which happens in classical quadratic programming approach. Inequality constraints treatment on each non linear iteration is based on 'NNLS' method (by Lawson and Hanson). We provide an original function 'lsi_ln' for solving linear least squares problem with inequality constraints in least norm sens. Thus if Jacobian of the problem is rank deficient a solution still can be provided. However, truncation errors are probable in this case. Equality constraints are treated by using a basis of Null-space. User defined function calculating residuals must return a list having residual vector (not their squared sum) and Jacobian. If Jacobian is not in the returned list, package 'numDeriv' is used to calculated finite difference version of Jacobian. The 'NLSIC' method was fist published in Sokol et al. (2012) doi:10.1093/bioinformatics/btr716.

Changes in 1.2.0

nlsic(): added reuse of jacobian in non linear iterations
con$reuse_jac=TRUE (do it by default)
con$max_reuse=5L (default maximal number of jacobian reuses)
nlsic(): con$btfrac default value is brought to 0.8 instead of 0.5.
lsi() and lsi_ln() return x with aqr attribute containing QR decomposition of matrix a. This is used to spare some calculations in non linear iterations

From NEWS.md in the release

Install

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

install.packages("nlsic", 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("MathsCell/nlsic")

Development version from MathsCell/nlsic. 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-nlsic

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-nlsic

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-nlsic

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: 1.1 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.2.0

READMENoVignettesNoNEWSYes · 100% structured · mentions 1.2.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 16
Examples that run: 100%5 run in a plain check
Exported functions with examples: 33%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

4.5K

CRAN downloads in the past year

Rank #12,797 · ~12/day · ~373/mo

Releases R versions

Daily download trend is not available in this view yet.

33230 days

88290 days

4.5K1 year

Compare downloads with other packages →

Also on118 r2u4 autocran1.4K conda_forge87 c2d4u

How downloads are counted

Repository

mathscell/nlsic ↗Account: MathsCell

1Stars

0Forks

0Open issues

0Open PRs

0Releases

10Commits

1Commit identities

10 commits · Last activity 2026-01-27

Responsiveness

How these are sampled

PRs merged (all time): not measured
Median days to close, 50 most recently updated closed issues: 8
Median days to close, 50 most recently updated closed PRs: not measured

Stars over time

2023-07-06 · 12026-07-07 · 1

How these are measured

PracticesBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/mathscell/nlsic on 2026-10-22.

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Installing nlsic adds 3 packages (2 with compiled code, 143 KB of source tarballs). Heaviest: glue 127 KB, nnls 11 KB, dotty 4.5 KB.

Depends (3)

nnls dotty glue

Imports (0)

none

LinkingTo (0)

none

Suggests (3)

numDeriv RUnit limSolve

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

Depends 1 · Imports 1

Depends, Imports or LinkingTo, most downloaded first

bspline dynafluxr

How these are counted

Code & Tests

People & History

People (1)

Serguei Sokol

Author, Maintainer since 1.0.1 (2022)

Releases (6)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
1.2.0Latest
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2026-01-28 · current release · diff ↗ ·
added 1 export
g
1.1.1
record
2025-06-27 · diff ↗
1.1.0
record
2025-05-16 · diff ↗ ·
added 1 export
pnull
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.0.4
record
2023-06-26 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.0.2
record
2022-04-12 · diff ↗
1.0.1
record
2022-01-11
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2022-01-11
Total releases: 6 / 4 yrs
License: GPL-2 OSI
Download size: 25 KB

Appears in task views

Optimization and Mathematical Programming

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("nlsic")

Format

Sokol, S. (2026). nlsic: Non Linear Least Squares with Inequality Constraints (Version 1.2.0) [Computer software]. https://doi.org/10.32614/CRAN.package.nlsic

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 nlsic version 1.2.0 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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