Other packages > Find by keyword >

plyr  

Tools for Splitting, Applying and Combining Data
View on CRAN: Click here


Download and install plyr package within the R console
Install from CRAN:
install.packages("plyr")

Install from Github:
library("remotes")
install_github("cran/plyr")

Install by package version:
library("remotes")
install_version("plyr", "1.8.9")



Attach the package and use:
library("plyr")
Maintained by
Hadley Wickham
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2008-09-30
Latest Update: 2023-10-02
Description:
A set of tools that solves a common set of problems: you need to break a big problem down into manageable pieces, operate on each piece and then put all the pieces back together. For example, you might want to fit a model to each spatial location or time point in your study, summarise data by panels or collapse high-dimensional arrays to simpler summary statistics. The development of 'plyr' has been generously supported by 'Becton Dickinson'.
How to cite:
Hadley Wickham (2008). plyr: Tools for Splitting, Applying and Combining Data. R package version 1.8.9, https://cran.r-project.org/web/packages/plyr. Accessed 04 Aug. 2026.
Previous versions and publish date:
(2026-07-09 06:42), 0.1.1 (2008-10-08 17:43), 0.1.2 (2008-11-18 08:56), 0.1.3 (2008-11-19 16:58), 0.1.4 (2008-12-13 11:30), 0.1.5 (2009-02-24 08:37), 0.1.6 (2009-04-15 15:50), 0.1.7 (2009-04-15 22:41), 0.1.8 (2009-04-21 08:57), 0.1.9 (2009-06-23 15:20), 0.1 (2008-09-30 09:29), 1.0.1 (2010-07-06 14:50), 1.0.2 (2010-07-06 20:49), 1.0.3 (2010-07-07 08:04), 1.0 (2010-07-05 20:25), 1.1 (2010-07-24 22:42), 1.2.1 (2010-09-11 11:12), 1.2 (2010-09-10 09:28), 1.4.1 (2011-04-05 15:24), 1.4 (2011-01-04 08:29), 1.5.1 (2011-04-13 16:24), 1.5.2 (2011-04-24 08:57), 1.5 (2011-04-10 21:27), 1.6 (2011-07-29 16:32), 1.7.1 (2012-01-08 15:36), 1.7 (2011-12-30 12:23), 1.8.1 (2014-02-26 17:25), 1.8.2 (2015-04-21 11:41), 1.8.3 (2015-06-12 11:05), 1.8.4 (2016-06-08 10:40), 1.8.5 (2019-12-10 12:30), 1.8.6 (2020-03-03 15:40), 1.8.7 (2022-03-24 22:50), 1.8.8 (2022-11-11 21:50), 1.8 (2012-12-06 08:59)
Other packages that cited plyr R package
View plyr citation profile
Other R packages that plyr depends, imports, suggests or enhances
Complete documentation for plyr
Downloads during the last 30 days

Today's Hot Picks in Authors and Packages

nextGenShinyApps  
Craft Exceptional 'R Shiny' Applications and Dashboards with Novel Responsive Tools
Nove responsive tools for designing and developing 'Shiny' dashboards and applications. The scripts ...
Download / Learn more Package Citations See dependency  
sValues  
Measures of Sturdiness of Regression Coefficients
Implements the s-values proposed by Ed. Leamer. It provides a context-minimal approach for sensitivi ...
Download / Learn more Package Citations See dependency  
ggconf  
Simpler Appearance Modification of "ggplot2"
A flexible interface for ggplot2theme potentially saving 50 of your typing. ...
Download / Learn more Package Citations See dependency  
GLMMadaptive  
Generalized Linear Mixed Models using Adaptive Gaussian Quadrature
Fits generalized linear mixed models for a single grouping factor under maximum likelihood approxim ...
Download / Learn more Package Citations See dependency  
epigraphdb  
Interface Package for the 'EpiGraphDB' Platform
The interface package to access data from the 'EpiGraphDB' platform. It p ...
Download / Learn more Package Citations See dependency  
Maintainer: Yi Liu (view profile)
rCMA  
R-to-Java Interface for 'CMA-ES'
Tool for providing access to the Java version 'CMAEvolutionStrategy' of Nikolaus Hansen. 'CMA-ES' i ...
Download / Learn more Package Citations See dependency  

28,083

R Packages

239,283

Dependencies

74,457

Author Associations

28,084

Publication Badges

© Copyright since 2022. All right reserved, rpkg.net.  Based in Cambridge, Massachusetts, USA