R Observatory: Metrics for SPEI version 1.8.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

SPEI

1.8.1

Calculation of the Standardized Precipitation-Evapotranspiration Index

5packages depend

46.9Kdownloads / year

80.8%test coverage

13/13checks pass

Overview

About

Maintained by Santiago BegueríaFirst published 2011-10-189 releasesCRAN page ↗GitHub ↗

A set of functions for computing potential evapotranspiration and several widely used drought indices including the Standardized Precipitation-Evapotranspiration Index (SPEI).

Install

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

install.packages("SPEI", 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("sbegueria/SPEI")

Development version from sbegueria/SPEI. 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-spei

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-SPEI

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-SPEI

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

Health

CRAN checks

13OK

Slowest check: 2.1 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.44

80.8%

Coverage · measured lines

100%

Documentation · exports

8

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

READMENoVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 80%
Documented parameters: 96%
Return-value docs: 80%
References docs: 88%

Downloads

46.9K

CRAN downloads in the past year

Rank #2,232 · ~128/day · ~3.9K/mo

Releases R versions

Daily download trend is not available in this view yet.

2K30 days

8.5K90 days

46.9K1 year

Compare downloads with other packages →

Also on152 r2u31 autocran11.9K conda_forge94 c2d4u

Repository

GitHub ↗ sbegueria/spei

106Stars

40Forks

31Open issues

2Open PRs

4Releases

172Commits

4Contributors

172 commits · Last activity 2025-11-24 · +1% stars, 30d

Stars over time

2025-07-18 · 892026-07-31 · 106

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/sbegueria/spei on 2026-08-23.

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 v1 (2026-07-18)

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (8)

lmomco lmom TLMoments reshape ggplot2 checkmate zoo lubridate

LinkingTo (0)

none

Suggests (2)

covr testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

0indirect

ClimInd CSIndicators NPRED WASP lmomPi

Code & Tests

Datasets

People & History

People (2)

Maintainer (1)

Santiago Beguería

Author, Maintainer

Authors (2)

Santiago Beguería

Author, Maintainer

Sergio M. Vicente-Serrano

Author

Listed in earlier versions (2)

Sergio M. Vicente-Serrano.

no longer listed · 1.0 to 1.2

Sergio M.

no longer listed · 1.3 to 1.8.1

Package Timeline

9 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
R
R 4.3.0 released · 2023-04-21
1.8.1Latest
2023-03-02 · current release · diff ↗
1.8.0
2023-01-20 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.7
2017-06-07 · diff ↗
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10

Show 10 earlier events

1.6
2013-11-07 · diff ↗
1.4
2013-05-09 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.3
2013-03-08 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.2
2012-03-21 · diff ↗
1.1
2012-01-25 · diff ↗
R
R 2.14.0 released · 2011-10-31
1.0
2011-10-18
R
R 2.13.0 released · 2011-04-13

Package metadata

First published: 2011-10-18
Total releases: 9 / 15 yrs
License: GPL-2 OSI
Minimum R: ≥ 3.5.0
Bundled data: 69 KB / 4 files
Download size: 812 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("SPEI")

Format

Beguería, S., & Vicente-Serrano, S. M. (2023). SPEI: Calculation of the Standardized Precipitation-Evapotranspiration Index (Version 1.8.1) [Computer software]. https://doi.org/10.32614/CRAN.package.SPEI

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 SPEI version 1.8.1 [Data set]. HJJB, LLC. Data release v2026-08-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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