parallelDist

0.2.7

Parallel Distance Matrix Computation using Multiple Threads

20packages depend

54.7Kdownloads / year

99.6%test coverage

9/13checks pass

Overview

About

Maintained by Alexander EckertFirst published 2017-06-069 releasesCRAN page ↗GitHub ↗

A fast parallelized alternative to R's native 'dist' function to calculate distance matrices for continuous, binary, and multi-dimensional input matrices, which supports a broad variety of 41 predefined distance functions from the 'stats', 'proxy' and 'dtw' R packages, as well as user- defined functions written in C++. For ease of use, the 'parDist' function extends the signature of the 'dist' function and uses the same parameter naming conventions as distance methods of existing R packages. The package is mainly implemented in C++ and leverages the 'RcppParallel' package to parallelize the distance computations with the help of the 'TinyThread' library. Furthermore, the 'Armadillo' linear algebra library is used for optimized matrix operations during distance calculations. The curiously recurring template pattern (CRTP) technique is applied to avoid virtual functions, which improves the Dynamic Time Warping calculations while the implementation stays flexible enough to support different DTW step patterns and normalization methods.

Install

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

install.packages("parallelDist", 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("alexeckert/parallelDist")

Development version from alexeckert/parallelDist. 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-paralleldist

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-parallelDist

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-parallelDist

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

Health

CRAN checks

4NOTE9OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-gcc
NOTE r-devel-windows-x86_64

Slowest check: 6.8 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 5.02

99.6%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-07-16
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 384 wordsVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 0%
Documented parameters: 100%
Return-value docs: 100%
References docs: 0%

Downloads

54.7K

CRAN downloads in the past year

Rank #1,975 · ~150/day · ~4.6K/mo

Releases R versions

Daily download trend is not available in this view yet.

4.4K30 days

11.8K90 days

54.7K1 year

Compare downloads with other packages →

Also on1.1K r2u4 autocran8.3K conda_forge

Repository

GitHub ↗ alexeckert/paralleldist

55Stars

10Forks

8Open issues

3Open PRs

9Releases

64Commits

5Contributors

distance-computationscranmatricesrdata-science

License GPL-2.0 · 64 commits · Last activity 2025-09-27 · +1.9% stars, 30d

Stars over time

2025-01-12 · 512026-07-19 · 55

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/alexeckert/paralleldist on 2026-07-31.

Continuous integration (1)

GitHub Actions

Governance and community (1)

Funding

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

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.0.2

Imports (2)

Rcpp RcppParallel

LinkingTo (3)

Rcpp RcppParallel RcppArmadillo

Suggests (6)

dtw ggplot2 proxy testthat RcppArmadillo RcppXPtrUtils

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

20direct

1indirect

Code & Tests

People & History

People (3)

Maintainer (1)

Alexander Eckert

Author, Maintainer

Authors (1)

Alexander Eckert

Author, Maintainer

Contributors (2)

Lucas Godoy

Contributor · added in 0.2.3

Srikanth KS

Contributor · added in 0.2.3

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
0.2.7Latest
2025-09-27 · current release · diff ↗
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
R
R 4.2.0 released · 2022-04-22
0.2.6
2022-02-04 · diff ↗
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
0.2.4
2018-12-12 · diff ↗
0.2.3
2018-12-12 · diff ↗
0.2.2
2018-09-24 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.2.1
2017-12-05 · diff ↗
0.2.0
2017-09-27 · diff ↗

Show 3 earlier events

0.1.1
2017-06-07 · diff ↗
0.1.0
2017-06-06
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-06-06
Total releases: 9 / 9 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.0.2
Download size: 332 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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