R Observatory: Metrics for skymodelr version 0.6.4

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

skymodelr

0.6.4Package record

Generates and Samples Realistic Terrestrial Atmospheres

1packages dependsuggested by 1

4Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Tyler Morgan-WallCRAN page ↗GitHub ↗Website ↗Issues ↗

Generates physically based sky environment maps and radiance samples using the spectral Hosek-Wilkie and Prague atmosphere models. Functions write high-dynamic-range 'OpenEXR' domes in latitude-longitude projections, compute per-direction RGB or 55-channel values, and optionally composite time-accurate star fields and moon phases. Features include automatic sun and moon positioning from date, time and location, support for sea-level and high-altitude observers, wide-spectrum coefficients, and multithreaded C++ acceleration for fast, high-resolution output. For model details, see Hosek and Wilkie (2012) doi:10.1145/2185520.2185591, Hosek and Wilkie (2013) doi:10.1109/MCG.2013.18, Wilkie et al. (2021) doi:10.1145/3450626.3459758, and Vevoda et al. (2022) doi:10.1111/cgf.14677.

Install

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

install.packages("skymodelr", 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("tylermorganwall/skymodelr")

Development version from tylermorganwall/skymodelr. 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-skymodelr

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-skymodelr

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 3.8 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-09-19
ERROR11 OK, 1 ERROR2026-07-01
OK9 OK2026-06-28
ERROR4 OK, 3 ERROR2026-06-27

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.6.4

README· In the repository, left out of the releaseVignettesNoNEWSYes · 67% structured · does not mention 0.6.4Citation fileNoWebsiteYes · pkgdown

Help pages: 43 (30 internal)
Examples that run: 100%13 run in a plain check (11 of them under a condition)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

4K

CRAN downloads in the past year

Rank #3,293 · ~11/day · ~332/mo

Releases R versions

Daily download trend is not available in this view yet.

1.8K30 days

3.5K90 days

4K1 year

Compare downloads with other packages →

Also on100 r2u

How downloads are counted

Repository

tylermorganwall/skymodelr ↗Account: tylermorganwall

12Stars

1Forks

0Open issues

0Open PRs

0Releases

115Commits

1Commit identities

115 commits · Last activity 2026-10-11 · 0% stars, 30d · Default branch at 0.7.0, ahead of CRAN 0.6.4 (checked 2026-10-21)

Responsiveness

not measured

Stars over time

2026-03-16 · 12026-09-09 · 12

How these are measured

PracticesBeta

11 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/tylermorganwall/skymodelr on 2026-10-21.

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 2026-09-14 · The repository has a site deploy workflow

Coverage (1)

Coverage reporting

Reproducibility and dev environment (1)

data-raw/

Show all practicesHide 1 practice

Lint, format, editor (3)

Lint workflowAirRStudio project

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

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Installing skymodelr adds 38 packages (26 with compiled code, 29 MB of source tarballs). Heaviest: stringi 11 MB, spacefillr 3.1 MB, libopenexr 2.1 MB.

Depends (1)

R >= 4.3.0

Imports (4)

Rcpp swephR rayvertex rayimage

LinkingTo (4)

Rcpp RcppThread libimath libopenexr

Suggests (3)

testthat libopenexr rayrender (>= 0.40.1)

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

3indirect

Imports 1 · LinkingTo 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

rayrender

Suggests, most downloaded first

rayshader

How these are counted

Code & Tests

Datasets

People & History

People (6)

Tyler Morgan-Wall

Eric Bruneton

Contributor, Copyright holder

Lukas Hosek

Contributor, Copyright holder

Petr Vevoda

Contributor

Alexander Wilkie

Contributor, Copyright holder

Charles University

Copyright holder

Releases (3)

Pick two releases to compare their code metrics.

0.6.4Latest
record
2026-09-14 · current release · diff ↗ ·
added 3 exports
generate_moon_disk, generate_sun_disk, get_prague_sky_metadata
0.3.2
record
2026-06-27 · diff ↗
0.3.1
record
2026-06-26
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-06-26
Total releases: 3 / 1 yrs
License: GPL-3 OSI
Copyright: See inst/COPYRIGHTS in the package
Minimum R: ≥ 4.3.0
Bundled data: 161 KB / 1 file
Download size: 666 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("skymodelr")

Format

Morgan-Wall, T., Charles University, Bruneton, E., Hosek, L., Vevoda, P., & Wilkie, A. (2026). skymodelr: Generates and Samples Realistic Terrestrial Atmospheres (Version 0.6.4) [Computer software]. https://doi.org/10.32614/CRAN.package.skymodelr

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 skymodelr version 0.6.4 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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