plyr
A R package for splitting, applying and combining large problems into simpler problems
Science Score: 23.0%
This score indicates how likely this project is to be science-related based on various indicators:
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○CITATION.cff file
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✓codemeta.json file
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○.zenodo.json file
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○DOI references
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○Academic publication links
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✓Committers with academic emails
3 of 20 committers (15.0%) from academic institutions -
○Institutional organization owner
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○JOSS paper metadata
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○Scientific vocabulary similarity
Low similarity (13.6%) to scientific vocabulary
Keywords from Contributors
Repository
A R package for splitting, applying and combining large problems into simpler problems
Basic Info
- Host: GitHub
- Owner: hadley
- License: other
- Language: R
- Default Branch: main
- Homepage: plyr.had.co.nz
- Size: 14.2 MB
Statistics
- Stars: 502
- Watchers: 46
- Forks: 113
- Open Issues: 28
- Releases: 9
Metadata Files
README.md
plyr
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plyr is a set of tools for a common set of problems: you need to split up a big data structure into homogeneous pieces, apply a function to each piece and then combine all the results back together. For example, you might want to:
- fit the same model each patient subsets of a data frame
- quickly calculate summary statistics for each group
- perform group-wise transformations like scaling or standardising
It's already possible to do this with base R functions (like split and the apply family of functions), but plyr makes it all a bit easier with:
- totally consistent names, arguments and outputs
- convenient parallelisation through the foreach package
- input from and output to data.frames, matrices and lists
- progress bars to keep track of long running operations
- built-in error recovery, and informative error messages
- labels that are maintained across all transformations
Considerable effort has been put into making plyr fast and memory efficient, and in many cases plyr is as fast as, or faster than, the built-in equivalents.
A detailed introduction to plyr has been published in JSS: "The Split-Apply-Combine Strategy for Data Analysis", http://www.jstatsoft.org/v40/i01/. You can find out more at https://had.co.nz/plyr/, or track development at https://github.com/hadley/plyr. You can ask questions about plyr (and data manipulation in general) on the plyr mailing list. Sign up at https://groups.google.com/group/manipulatr.
Status
plyr is retired: this means only changes necessary to keep it on CRAN will be made. We recommend using dplyr (for data frames) or purrr (for lists) instead.
Owner
- Name: Hadley Wickham
- Login: hadley
- Kind: user
- Location: Houston, TX
- Company: @posit-pbc
- Website: https://hadley.nz
- Repositories: 443
- Profile: https://github.com/hadley
Chief Scientist at @posit-pbc
GitHub Events
Total
- Watch event: 8
- Push event: 2
- Pull request event: 1
Last Year
- Watch event: 8
- Push event: 2
- Pull request event: 1
Committers
Last synced: 12 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| hadley | h****m@g****m | 645 |
| Kirill Müller | k****r@i****h | 92 |
| Peter Meilstrup | p****p@g****m | 38 |
| Winston Chang | w****n@s****g | 20 |
| dougmitarotonda | d****a@g****m | 16 |
| tim bates | t****s@g****m | 14 |
| hadley | h****y@6****c | 11 |
| homer | h****g@g****m | 6 |
| Richard Cotton | r****s@g****m | 3 |
| Henrik Bengtsson | hb@a****g | 2 |
| baptiste | b****e@g****m | 2 |
| Will Beasley | w****y@h****m | 2 |
| Susanne Oberhauser | S****r@g****e | 2 |
| Jim Hester | j****r@g****m | 2 |
| Jean-Olivier Irisson | i****n@n****g | 2 |
| Martin Mächler | m****r@s****h | 1 |
| Michael Chirico | m****4@g****m | 1 |
| bettinagruen | 3****n | 1 |
| scottko | s****k@g****m | 1 |
| tj mahr | m****r@w****u | 1 |
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: 11 months ago
All Time
- Total issues: 2
- Total pull requests: 101
- Average time to close issues: 8 days
- Average time to close pull requests: 7 months
- Total issue authors: 2
- Total pull request authors: 35
- Average comments per issue: 0.0
- Average comments per pull request: 2.91
- Merged pull requests: 53
- Bot issues: 0
- Bot pull requests: 0
Past Year
- Issues: 0
- Pull requests: 0
- Average time to close issues: N/A
- Average time to close pull requests: N/A
- Issue authors: 0
- Pull request authors: 0
- Average comments per issue: 0
- Average comments per pull request: 0
- Merged pull requests: 0
- Bot issues: 0
- Bot pull requests: 0
Top Authors
Issue Authors
- jarbet (1)
- hadley (1)
Pull Request Authors
- krlmlr (32)
- crowding (8)
- wch (8)
- dougmitarotonda (6)
- tbates (5)
- wibeasley (5)
- jiho (3)
- MichaelChirico (3)
- ghost (2)
- HenrikBengtsson (2)
- froh (2)
- jimhester (2)
- mike-lawrence (2)
- mculbert (1)
- lhsego (1)
Top Labels
Issue Labels
Pull Request Labels
Packages
- Total packages: 2
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Total downloads:
- cran 299,301 last-month
- Total docker downloads: 79,552,719
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Total dependent packages: 1,110
(may contain duplicates) -
Total dependent repositories: 5,627
(may contain duplicates) - Total versions: 44
- Total maintainers: 1
cran.r-project.org: plyr
Tools for Splitting, Applying and Combining Data
- Homepage: http://had.co.nz/plyr
- Documentation: http://cran.r-project.org/web/packages/plyr/plyr.pdf
- License: MIT + file LICENSE
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Latest release: 1.8.9
published almost 3 years ago
Rankings
Maintainers (1)
proxy.golang.org: github.com/hadley/plyr
- Documentation: https://pkg.go.dev/github.com/hadley/plyr#section-documentation
- License: other
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Latest release: v1.8.9
published almost 3 years ago
Rankings
Dependencies
- R >= 3.1.0 depends
- Rcpp >= 0.11.0 imports
- abind * suggests
- covr * suggests
- doParallel * suggests
- foreach * suggests
- iterators * suggests
- itertools * suggests
- tcltk * suggests
- testthat * suggests
- actions/checkout v3 composite
- r-lib/actions/check-r-package v2 composite
- r-lib/actions/setup-pandoc v2 composite
- r-lib/actions/setup-r v2 composite
- r-lib/actions/setup-r-dependencies v2 composite
- actions/checkout v3 composite
- actions/upload-artifact v3 composite
- r-lib/actions/setup-r v2 composite
- r-lib/actions/setup-r-dependencies v2 composite