R Observatory: Metrics for nvctr version 0.1.7

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

nvctr

0.1.7Package record

The n-vector Approach to Geographical Position Calculations using an Ellipsoidal Model of Earth

0packages depend

2.5Kdownloads / year

73.1%test coverage

13/13flavors OK

Overview

About

Maintained by Enrico SpinielliCRAN page ↗GitHub ↗Website ↗Issues ↗Declared funder: EUROCONTROL

The n-vector framework uses the normal vector to the Earth ellipsoid (called n-vector) as a non-singular position representation that turns out to be very convenient for practical position calculations. The n-vector is simple to use and gives exact answers for all global positions, and all distances, for both ellipsoidal and spherical Earth models. This package is a translation of the 'Matlab' library from FFI, the Norwegian Defence Research Establishment, as described in Gade (2010) doi:10.1017/S0373463309990415.

Changes in 0.1.7

Resubmission. I resort to use pixels width despite the suggestion

from CRAN maintainer: I still get a NOTE that blocks submission.

From NEWS.md in the release

Install

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

install.packages("nvctr", 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("euctrl-pru/nvctr")

Development version from euctrl-pru/nvctr. 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-nvctr

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-nvctr

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-nvctr

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: 1.6 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-05-10
WARNING12 OK, 1 WARNING2026-05-09
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.7

READMEYes · 243 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 0.1.7Citation fileNoWebsiteYes · pkgdown

Help pages: 24 (1 internal)includes a package overview page
Examples that run: 82%18 run in a plain check · 4 never run
Exported functions with examples: 96%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 67%

Vignettes (1)

Simple and Exact Solutions to Position Calculation

How these are measured

Downloads

2.5K

CRAN downloads in the past year

Rank #16,269 · ~7/day · ~211/mo

Releases R versions

Daily download trend is not available in this view yet.

28930 days

76390 days

2.5K1 year

Compare downloads with other packages →

Also on83 r2u6 autocran

How downloads are counted

Repository

euctrl-pru/nvctr ↗Organization: euctrl-pru

12Stars

0Forks

2Open issues

0Open PRs

2Releases

124Commits

2Commit identities

geographical-positionsrrstatsr-packagen-vector

124 commits · Last activity 2025-12-13 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): not measured
Median days to close, 50 most recently updated closed issues: 1
Median days to close, 50 most recently updated closed PRs: not measured

Stars over time

2024-04-01 · 102026-07-07 · 12

How these are measured

PracticesBeta

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

Checks run against github.com/euctrl-pru/nvctr on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2025-12-13 · The repository has a site deploy workflow

pkgdown site last built 2025-12-13

Coverage (1)

Coverage reporting (Codecov)

CRAN release process (3)

cran-comments.mdrevdep/CRAN-SUBMISSION

Show all practicesHide 2 practices

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Installing nvctr adds 2 packages (1 with compiled code, 664 KB of source tarballs). Heaviest: pracma 389 KB, magrittr 275 KB.

Depends (0)

none

Imports (2)

magrittr pracma

LinkingTo (0)

none

Suggests (8)

bookdown covr geosphere knitr png rmarkdown spelling testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (2)

Enrico Spinielli

Author, Maintainer since 0.1.1 (2019)

EUROCONTROL

Copyright holder, Funder

Releases (3)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.1.7Latest
record
2025-12-13 · current release · 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
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.1.4
record
2020-10-28 · diff ↗ ·
added 4 exports
along_track_distance, altitude_azimuth_distance, cross_track_distance, cross_track_intersection
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
0.1.1
record
2019-03-07
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-03-07
Total releases: 3 / 7 yrs
License: MIT + file LICENSE OSI
Download size: 531 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("nvctr")

Format

Spinielli, E., & EUROCONTROL. (2025). nvctr: The n-vector Approach to Geographical Position Calculations using an Ellipsoidal Model of Earth (Version 0.1.7) [Computer software]. https://doi.org/10.32614/CRAN.package.nvctr

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 nvctr version 0.1.7 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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