R Observatory: Metrics for tanaka version 0.4.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

tanaka

0.4.0

Design Shaded Contour Lines (or Tanaka) Maps

1packages depend

4.2Kdownloads / year

100.0%test coverage

13/13checks pass

Overview

About

Maintained by Timothée GiraudFirst published 2019-03-087 releasesCRAN page ↗GitHub ↗

The Tanaka method enhances the representation of topography on a map using shaded contour lines. In this simplified implementation of the method, north-west white contours represent illuminated topography and south-east black contours represent shaded topography. See Tanaka (1950) doi:10.2307/211219.

Install

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

install.packages("tanaka", 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("riatelab/tanaka")

Development version from riatelab/tanaka. 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-tanaka

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-tanaka

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-tanaka

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

Health

CRAN checks

13OK

Slowest check: 4.4 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.02

100.0%

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
OK2026-06-08
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-06-07
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 · 250 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 33%

Downloads

4.2K

CRAN downloads in the past year

Rank #11,141 · ~12/day · ~350/mo

Releases R versions

Daily download trend is not available in this view yet.

24630 days

87990 days

4.2K1 year

Compare downloads with other packages →

Also on115 r2u18 autocran26 c2d4u

Repository

GitHub ↗ riatelab/tanaka

85Stars

4Forks

0Open issues

0Open PRs

3Releases

61Commits

2Contributors

mapr-packagespatialtanaka

61 commits · Last activity 2023-11-28 · 0% stars, 30d

Stars over time

2025-07-13 · 812026-07-07 · 85

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/riatelab/tanaka on 2026-08-16.

Continuous integration (1)

GitHub Actions

Research and citation (2)

CITATION.cffcodemeta.json

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (6)

terra sf mapiso maplegendgrDevicesgraphics

LinkingTo (0)

none

Suggests (3)

tinytest covr lwgeom

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

cholera

Code & Tests

People & History

People (1)

Maintainer (1)

Timothée Giraud

Maintainer, Author

Authors (1)

Timothée Giraud

Maintainer, Author

Package Timeline

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

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
0.4.0Latest
2023-11-28 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
0.3.0
2022-07-04 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.2.0
2022-01-07 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
0.1.3
2020-04-14 · diff ↗
0.1.2
2020-03-23 · diff ↗
0.1.1
2019-10-07 · diff ↗
R
R 3.6.0 released · 2019-04-26
0.1.0
2019-03-08
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-03-08
Total releases: 7 / 7 yrs
License: GPL-3 OSI
Download size: 489 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("tanaka")

The authors publish a CITATION.cff, 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 tanaka version 0.4.0 [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.

Report a problem with this page →