R Observatory: Metrics for welo version 0.1.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

welo

0.1.5

Weighted and Standard Elo Rates

0packages depend

3.2Kdownloads / year

–test coverage

12/13checks pass

Overview

About

Maintained by Vincenzo CandilaFirst published 2021-04-306 releasesCRAN page ↗

Estimates the standard and weighted Elo (WElo, Angelini et al., 2022 doi:10.1016/j.ejor.2021.04.011) rates. The current version provides Elo and WElo rates for tennis, according to different systems of weights (games or sets) and scale factors (constant, proportional to the number of matches, with more weight on Grand Slam matches or matches played on a specific surface). Moreover, the package gives the possibility of estimating the (bootstrap) standard errors for the rates. Finally, the package includes betting functions that automatically select the matches on which place a bet.

Install

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

install.packages("welo", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

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-welo

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-welo

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-welo

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

Health

CRAN checks

1ERROR12OK

Failing flavors

ERROR r-oldrel-windows-x86_64

Slowest check: 2.9 min · r-oldrel-macos-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

6

Dependencies · direct

Check history

ERROR2026-08-20
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-08-18
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-08-17
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-08-15
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-08-12
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Show 11 earlier snapshots

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
OK2026-07-15
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-07-14
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-07-13
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-07-03
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-06-16
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-10
10 OK · 0 NOTE · 0 WARNING · 3 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 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: 50%
Documented parameters: 100%
Return-value docs: 100%
References docs: 8%

Downloads

3.2K

CRAN downloads in the past year

Rank #15,762 · ~9/day · ~269/mo

Releases R versions

Daily download trend is not available in this view yet.

19530 days

68690 days

3.2K1 year

Compare downloads with other packages →

Also on100 r2u38 autocran11 c2d4u

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (6)

xts Rdpackbootrio (>= 0.5.29)ggplot2 reshape2

LinkingTo (0)

none

Suggests (1)

knitr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Vincenzo Candila

Author, Maintainer

Authors (1)

Vincenzo Candila

Author, Maintainer

Package Timeline

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

0.1.5Latest
2026-07-21 · current release · diff ↗
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
0.1.4
2024-03-19 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.1.3
2023-01-05 · diff ↗
0.1.2
2022-06-23 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.1.1
2021-10-12 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.1.0
2021-04-30
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2021-04-30
Total releases: 6 / 5 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Bundled data: 115 KB / 2 files
Download size: 148 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

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Cite

Cite this package

Run in R for the authors' preferred citation:

citation("welo")

Format

Candila, V. (2026). welo: Weighted and Standard Elo Rates (Version 0.1.5) [Computer software]. https://doi.org/10.32614/CRAN.package.welo

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 welo version 0.1.5 [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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