R Observatory: Metrics for SSIMmap version 0.4.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

SSIMmap

0.4.0Package record

The Structural Similarity Index Measure for Maps

0packages depend

3Kdownloads / year

0.0%test coverage

13/13flavors OK

Overview

About

Maintained by Hui Jeong (Hailyee) HaCRAN page ↗GitHub ↗Issues ↗

Extends the classical SSIM method proposed by 'Wang', 'Bovik', 'Sheikh', and 'Simoncelli'(2004) doi:10.1109/TIP.2003.819861. for irregular lattice-based maps and raster images. The geographical SSIM method incorporates well-developed 'geographically weighted summary statistics'('Brunsdon', 'Fotheringham' and 'Charlton' 2002) doi:10.1016/S0198-9715(01)00009-6 with an adaptive bandwidth kernel function for irregular lattice-based maps.

Changes in 0.4.0

Major changes

ssim_bandwidth(): redesigned with transform, option arguments and bias-variance trade-off plots.
ssim_polygon() and ssim_raster(): added permutation testing (do_test, R, fdr, alpha, seed) and FDR-corrected local p-values.

Breaking changes

Removed ssim_constant(). Constants k1 and k2 are now arguments of ssim_polygon().

New data

Added Toronto_SSIM, fwi_0816_bc, fwi_0818_bc, fwi_1101_bc.

New data

Added Toronto_SSIM (sf polygon object).
Added fwi_0816_bc, fwi_0818_bc, fwi_1101_bc (packed terra rasters of BC Fire Weather Index for Aug 16, Aug 18, and Nov 1, 2023).

From NEWS.md in the release

Install

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

install.packages("SSIMmap", 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("Hailyee-Ha/SSIMmap")

Development version from Hailyee-Ha/SSIMmap. 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-ssimmap

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-SSIMmap

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-SSIMmap

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: 6.5 min · r-oldrel-windows-x86_64

Status changes

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

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.4.0

READMEYes · 968 wordsVignettesYes · 1 · dynamicNEWSYes · 67% structured · mentions 0.4.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 7
Examples that run: 80%4 run in a plain check · 1 never run
Exported functions with examples: 33%
Documented parameters: 95%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (1)

Introduction to SSIMmap

How these are measured

Downloads

3K

CRAN downloads in the past year

Rank #14,378 · ~8/day · ~249/mo

Releases R versions

Daily download trend is not available in this view yet.

30330 days

83290 days

3K1 year

Compare downloads with other packages →

Also on88 r2u1 autocran

How downloads are counted

Repository

hailyee-ha/ssimmap ↗Account: Hailyee-Ha

1Stars

0Forks

1Open issues

0Open PRs

0Releases

107Commits

1Commit identities

107 commits · Last activity 2026-05-07

Responsiveness

not measured

Stars over time

2024-10-11 · 12026-07-07 · 1

How these are measured

PracticesBeta

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

Checks run against github.com/hailyee-ha/ssimmap on 2026-10-21.

Docs source (1)

README.Rmd

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Installing SSIMmap adds 33 packages (19 with compiled code, 33 MB of source tarballs). Heaviest: sf 9.3 MB, ggplot2 6.0 MB, s2 2.8 MB.

Depends (1)

R >= 3.5.0

Imports (7)

statsscales terra ggplot2 sf knitr FNN

LinkingTo (0)

none

Suggests (5)

RColorBrewer testthat rmarkdown patchwork tidyterra

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 (2)

Hui Jeong (Hailyee) Ha

Author, Maintainer since 0.1.0 (2023)

Jed Long

Author

Releases (3)

Pick two releases to compare their code metrics.

0.4.0Latest
record
2026-05-07 · current release · diff ↗ ·
removed 1 export
ssim_constant
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
0.1.1
record
2023-09-26 · diff ↗
0.1.0
record
2023-08-22
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-08-22
Total releases: 3 / 3 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Bundled data: 3.6 MB / 4 files
Download size: 4.1 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("SSIMmap")

Format

Ha, H. J. (., & Long, J. (2026). SSIMmap: The Structural Similarity Index Measure for Maps (Version 0.4.0) [Computer software]. https://doi.org/10.32614/CRAN.package.SSIMmap

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 SSIMmap version 0.4.0 [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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