R Observatory: Metrics for SPEI version 1.8.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

SPEI

1.8.1Package record

Calculation of the Standardized Precipitation-Evapotranspiration Index

2packages dependsuggested by 3

41.2Kdownloads / year

80.8%test coverage

13/13flavors OK

Overview

About

Maintained by Santiago BegueríaCRAN page ↗GitHub ↗Website ↗Issues ↗

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. 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-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). 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: 2.1 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-09-08
ERROR12 OK, 1 ERROR2026-09-07
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

Documentation signals are not tracked yet for this package.

WebsiteYes

How these are measured

Downloads

41.2K

CRAN downloads in the past year

Rank #2,368 · ~113/day · ~3.4K/mo

SPEI Releases R versions

Daily download trend is not available in this view yet.

2.5K30 days

7K90 days

41.2K1 year

Compare downloads with other packages →

Also on169 r2u9 autocran10.3K conda_forge141 c2d4u

How downloads are counted

Repository

sbegueria/spei ↗Account: sbegueria

108Stars

41Forks

31Open issues

2Open PRs

4Releases

172Commits

4Commit identities

172 commits · Last activity 2025-04-01 · +0.9% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 52%
Median days to close, 50 most recently updated closed issues: 81
Median days to close, 50 most recently updated closed PRs: 0

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/sbegueria/spei on 2026-10-11.

Docs source (1)

GitHub Pages site last deployed 2025-04-01

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 v3 (2026-09-26)

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Installing SPEI adds 36 packages (22 with compiled code, 24 MB of source tarballs). Heaviest: ggplot2 6.0 MB, deSolve 1.9 MB, Rcpp 1.8 MB.

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

2direct

0indirect

Depends 1 · Imports 1

Suggested by 3

Depends, Imports or LinkingTo, most downloaded first

CSIndicators ClimInd

Suggests, most downloaded first

WASP NPRED lmomPi

How these are counted

Code & Tests

Datasets

People & History

People (2)

Santiago Beguería

Author, Maintainer since 1.0 (2011)

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

Releases (9)

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
record
2023-03-02 · current release · diff ↗
1.8.0
record
2023-01-20 · diff ↗ ·
removed 1 export
pattern:.

added 9 exports
SPEINews, hargreaves, kern, kern.plot, parglo.maxlik, penman, spei, spi, thornthwaite
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
record
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 eventsHide 10 earlier events

1.6
record
2013-11-07 · diff ↗
1.4
record
2013-05-09 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.3
record
2013-03-08 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.2
record
2012-03-21 · diff ↗
1.1
record
2012-01-25 · diff ↗ ·
added 1 export
pattern:.
R
R 2.14.0 released · 2011-10-31
1.0
record
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
Download size: 812 KB

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 v2026-10-19. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-19, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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