R Observatory: Metrics for eRTG3D version 0.7.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

eRTG3D

0.7.0Package record

Empirically Informed Random Trajectory Generation in 3-D

0packages depend

3.3Kdownloads / year

90.1%test coverage

11/13flavors OK

Overview

About

Maintained by Merlin UnterfingerCRAN page ↗GitHub ↗Website ↗Issues ↗

Creates realistic random trajectories in a 3-D space between two given fix points, so-called conditional empirical random walks (CERWs). The trajectory generation is based on empirical distribution functions extracted from observed trajectories (training data) and thus reflects the geometrical movement characteristics of the mover. A digital elevation model (DEM), representing the Earth's surface, and a background layer of probabilities (e.g. food sources, uplift potential, waterbodies, etc.) can be used to influence the trajectories. Unterfinger M (2018). "3-D Trajectory Simulation in Movement Ecology: Conditional Empirical Random Walk". Master's thesis, University of Zurich. https://www.geo.uzh.ch/dam/jcr:6194e41e-055c-4635-9807-53c5a54a3be7/MasterThesis_Unterfinger_2018.pdf. Technitis G, Weibel R, Kranstauber B, Safi K (2016). "An algorithm for empirically informed random trajectory generation between two endpoints". GIScience 2016: Ninth International Conference on Geographic Information Science, 9, online. doi:10.5167/uzh-130652.

Changes in 0.7.0

Resubmission of the package to CRAN as it was removed due to a change in testing regime regarding the @donttest statement in the examples.
Removed @donttest in sim.glidingSoaring.3d function documentation.
Add contributing guidelines and code of conduct.
Changed workflow from git flow to trunc-based development. Removed develop branch. New features are merged directly into master and releases are tagged after CRAN has accepted the package submission, which triggers the documentation build.
Format package using styler and lintr.

From NEWS.md in the release

Install

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

install.packages("eRTG3D", 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("munterfi/eRTG3D")

Development version from munterfi/eRTG3D. 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-ertg3d

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-eRTG3D

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-eRTG3D

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

2NOTE11OK

Check messages

NOTECRAN incoming feasibilityr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc

Maintainer: ‘Merlin Unterfinger <info@munterfinger.ch>’

Package CITATION file contains call(s) to old-style citEntry().  Please
use bibentry() instead.

CRAN check page ↗

Slowest check: 10.2 min · r-oldrel-windows-x86_64

Status changes

NOTE11 OK, 2 NOTE2026-06-09
ERROR11 OK, 1 NOTE, 1 ERROR2026-06-08
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.7.0

READMEYes · 394 wordsVignettesYes · 9 · dynamicNEWSYes · 100% structured · mentions 0.7.0Citation fileYes · cites a publicationWebsiteYes · pkgdown

Help pages: 45includes a package overview page
Examples that run: 98%41 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 4%

Vignettes (9)

Coordinate reference system transformations in 3-D HTML
Included example data sets HTML
Linkage to the `sf` package HTML
Parallel computation HTML
Point cloud analysis HTML
Standard workflow of the eRTG3D HTML
Trajectory simulations in 2-D HTML
Verification of results HTML
Visualization of trajectories HTML

How these are measured

Downloads

3.3K

CRAN downloads in the past year

Rank #13,143 · ~9/day · ~275/mo

Releases R versions

Daily download trend is not available in this view yet.

32830 days

87090 days

3.3K1 year

Compare downloads with other packages →

Also on66 r2u5 autocran

How downloads are counted

Repository

munterfi/ertg3d ↗Account: munterfi

6Stars

2Forks

0Open issues

0Open PRs

11Releases

197Commits

2Commit identities

movement-ecologymachine-learningrandom-walktrajectory-generation3dsimulationrandom-trajectory-generatorbirds

License file reads as GPL-3.0 · 197 commits · Last activity 2022-02-23

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 0
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-01-09 · 62026-07-07 · 6

How these are measured

PracticesBeta

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

Checks run against github.com/munterfi/ertg3d on 2026-10-21.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux

Governance and community (2)

Code of conductContributing guide

Docs source (3)

pkgdown

GitHub Pages site last deployed 2022-02-22 · The repository has a site deploy workflow

Coverage (1)

Coverage reporting (Codecov)

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

16 external dependencies (excludes base and recommended)

Installing eRTG3D adds 79 packages (46 with compiled code, 75 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (1)

R >= 3.5.0

Imports (7)

CircStats ggplot2 pbapply plotly raster rasterVis tiff

LinkingTo (0)

none

Suggests (9)

knitr pander gridExtra plyr rmarkdown sf sp testthat covr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (4)

Merlin Unterfinger

Author, Maintainer since 0.6.2 (2019)

Kamran Safi

Contributor, Thesis advisor

George Technitis

Contributor, Thesis advisor

Robert Weibel

Thesis advisor

Releases (4)

Pick two releases to compare their code metrics.

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
unarchivedReturned to CRAN
2022-02-25
0.7.0Latest
record
2022-02-25 · current release · diff ↗
archivedRemoved from CRAN
2022-02-15
check problems were not corrected in time
0.6.4
record
2021-10-02 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.6.3
record
2020-07-27 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.6.2
record
2019-09-19
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-09-19
Total releases: 4 / 7 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.5.0
Bundled data: 624 KB / 2 files
Download size: 1.0 MB

Cite

Cite this package

Run in R for the authors' entry:

citation("eRTG3D")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.5167/uzh-130652.

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 eRTG3D version 0.7.0 [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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