R Observatory: Metrics for PowerSDI version 1.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

PowerSDI

1.0.0

Calculate Standardised Drought Indices Using NASA POWER Data

1packages depend

2.6Kdownloads / year

54.7%test coverage

13/13checks pass

Overview

About

Maintained by Gabriel Constantino BlainFirst published 2023-11-192 releasesCRAN page ↗GitHub ↗

A set of functions designed to calculate the standardised precipitation and standardised precipitation evapotranspiration indices using NASA POWER data as described in Blain et al. (2023) doi:10.2139/ssrn.4442843. These indices are calculated using a reference data source. The functions verify if the indices' estimates meet the assumption of normality and how well NASA POWER estimates represent real-world data. Indices are calculated in a routine mode. Potential evapotranspiration amounts and the difference between rainfall and potential evapotranspiration are also calculated. The functions adopt a basic time scale that splits each month into four periods. Days 1 to 7, days 8 to 14, days 15 to 21, and days 22 to 28, 29, 30, or 31, where 'TS=4' corresponds to a 1-month length moving window (calculated 4 times per month) and 'TS=48' corresponds to a 12-month length moving window (calculated 4 times per month).

Install

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

install.packages("PowerSDI", 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("gabrielblain/PowerSDI")

Development version from gabrielblain/PowerSDI. 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-powersdi

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-PowerSDI

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-PowerSDI

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

Health

CRAN checks

13OK

Slowest check: 1.3 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.57

54.7%

Coverage · measured lines

100%

Documentation · exports

5

Dependencies · direct

Check history

OK2026-08-05
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 · 1,807 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 8%

Downloads

2.6K

CRAN downloads in the past year

Rank #17,295 · ~7/day · ~214/mo

Releases R versions

Daily download trend is not available in this view yet.

14730 days

62090 days

2.6K1 year

Compare downloads with other packages →

Also on122 r2u20 autocran18 c2d4u

Repository

GitHub ↗ gabrielblain/powersdi

4Stars

3Forks

0Open issues

0Open PRs

1Releases

447Commits

2Contributors

447 commits · Last activity 2024-07-23

Stars over time

2025-04-08 · 42026-07-07 · 4

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/gabrielblain/powersdi on 2026-08-16.

CRAN release process (2)

cran-comments.mdrevdep/

Research and citation (1)

codemeta.json

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.1.0

Imports (5)

graphicslmom lubridate nasapowerstats

LinkingTo (0)

none

Suggests (5)

knitr rmarkdown testthat vcr vdiffr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

CropWaterBalance

Code & Tests

Datasets

People & History

People (4)

Maintainer (1)

Gabriel Constantino Blain

Author, Maintainer

Authors (4)

Gabriel Constantino Blain

Author, Maintainer

Leticia L. Martins

Author

Graciela R. Sobierajski

Author

Adam H. Sparks

Author

Package Timeline

2 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
1.0.0Latest
2024-01-15 · current release · diff ↗
0.1.3
2023-11-19
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-11-19
Total releases: 2 / 3 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.1.0
Bundled data: 172 KB / 4 files
Download size: 884 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Hydrological Data and Modeling

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("PowerSDI")

Format

Blain, G. C., Martins, L. L., Sobierajski, G. R., & Sparks, A. H. (2024). PowerSDI: Calculate Standardised Drought Indices Using NASA POWER Data (Version 1.0.0) [Computer software]. https://doi.org/10.32614/CRAN.package.PowerSDI

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 PowerSDI version 1.0.0 [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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