R Observatory: Metrics for slopes version 2.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

slopes

2.0.0

Calculate Slopes of Roads, Rivers and Trajectories

0packages depend

2.1Kdownloads / year

70.9%test coverage

13/13checks pass

Overview

About

Maintained by Robin LovelaceFirst published 2025-06-233 releasesCRAN page ↗GitHub ↗

Calculates the slope (longitudinal gradient or steepness) of linear geographic features such as roads (for more details, see Ariza-López et al. (2019) doi:10.1038/s41597-019-0147-x) and rivers (for more details, see Cohen et al. (2018) doi:10.1016/j.jhydrol.2018.06.066). It can use local Digital Elevation Model (DEM) data or download DEM data via the 'ceramic' package. The package also provides functions to add elevation data to linestrings and visualize elevation profiles.

Install

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

install.packages("slopes", 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("ropensci/slopes")

Development version from ropensci/slopes. 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-slopes

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-slopes

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-slopes

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 2.5 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.30

70.9%

Coverage · measured lines

100%

Documentation · exports

6

Dependencies · direct

Check history

OK2026-08-04
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 572 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 99%
Return-value docs: 91%
References docs: 0%

Downloads

2.1K

CRAN downloads in the past year

Rank #16,259 · ~6/day · ~178/mo

Releases R versions

Daily download trend is not available in this view yet.

21930 days

65090 days

2.1K1 year

Compare downloads with other packages →

Also on121 r2u14 autocran

Repository

GitHub ↗ ropensci/slopes

77Stars

8Forks

4Open issues

0Open PRs

3Releases

357Commits

8Contributors

License GPL-3.0 · 357 commits · Last activity 2026-06-25 · 0% stars, 30d

Stars over time

2025-06-14 · 712026-07-07 · 77

Repository practices

Upstream repositoryBeta

10 development-tooling and community-health practices detected across 7 families in the upstream repository

Checks run against github.com/ropensci/slopes on 2026-08-16.

Continuous integration (2)

GitHub Actionstic

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.Rmd

Show all practices

Research and citation (2)

codemeta.jsonJOSS paper

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.10

Imports (6)

sf terramethodspbapply geodist colorspace

LinkingTo (0)

none

Suggests (13)

knitr rmarkdown ceramic bookdown covr testthat osmextract stplanr dplyr tmap leaflet bench rlang

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (6)

Maintainer (1)

Robin Lovelace

Author, Maintainer, Copyright holder

Authors (4)

Robin Lovelace

Author, Maintainer, Copyright holder

Rosa Félix

Author

Gonçalo Matos

Author

Joey Talbot

Author

Copyright holders (1)

Robin Lovelace

Author, Maintainer, Copyright holder

Reviewers (2)

Dan Olner

Reviewer

Andy Teucher

Reviewer

Package Timeline

3 releases. Pick two to compare their code metrics. R releases are shown for context.

2.0.0Latest
2026-06-25 · current release · diff ↗
1.0.2
2026-06-17 · diff ↗
unarchivedReturned to CRAN
2026-06-17
archivedRemoved from CRAN
2026-05-24
issues were not corrected in time
R
R 4.6.0 released · 2026-04-24
1.0.1
2026-03-10
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-06-23
Total releases: 3 / 1 yrs
License: GPL-3 OSI
Minimum R: ≥ 2.10
Bundled data: 109 KB / 9 files
Download size: 2.1 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("slopes")

The authors publish a JOSS paper, so they have said how they want this cited. Run citation() and use what it gives you.

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 slopes version 2.0.0 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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