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zoo

Star Watch Copy Code

S3 Infrastructure for Regular and Irregular Time Series (Z's Ordered Observations)

View on CRAN: Click here

Download and install zoo package within the R console
Install from CRAN:

 install.packages("zoo")

Install from Github:

 library("remotes")

                        install_github("cran/zoo")

Install by package version:

 library("remotes")

                        install_version("zoo", "1.8-15")

Attach the package and use:

 library("zoo")

Maintained by
Achim Zeileis
[Scholar Profile | Author Map]

All associated links for this package

First Published: 2004-02-20

Latest Update: 2025-04-10

Description:

An S3 class with methods for totally ordered indexed observations. It is particularly aimed at irregular time series of numeric vectors/matrices and factors. zoo's key design goals are independence of a particular index/date/time class and consistency with ts and base R by providing methods to extend standard generics.

How to cite:

Achim Zeileis (2004). zoo: S3 Infrastructure for Regular and Irregular Time Series (Z's Ordered Observations). R package version 1.8-15, https://cran.r-project.org/web/packages/zoo. Accessed 05 Mar. 2026.

Previous versions and publish date:

0.1-1 (2004-02-20 17:24), 0.1-2 (2004-04-08 08:11), 0.1-3 (2004-04-14 18:11), 0.1-4 (2004-05-27 07:01), 0.2-0 (2004-08-12 19:02), 0.9-1 (2004-12-21 12:22), 0.9-9 (2005-04-27 10:38), 1.0-0 (2005-05-25 19:12), 1.0-1 (2005-06-22 18:23), 1.0-2 (2005-09-08 14:32), 1.0-3 (2005-12-01 12:53), 1.0-4 (2006-01-19 13:44), 1.0-5 (2006-02-06 13:53), 1.0-6 (2006-04-07 22:52), 1.0-7 (2006-05-22 22:21), 1.1-0 (2006-06-06 23:22), 1.1-1 (2006-07-03 18:42), 1.2-0 (2006-08-18 13:13), 1.2-1 (2006-09-19 19:01), 1.2-2 (2006-12-18 02:00), 1.3-0 (2007-04-20 13:01), 1.3-1 (2007-05-14 16:47), 1.3-2 (2007-06-26 21:36), 1.4-0 (2007-10-12 17:11), 1.4-1 (2007-12-14 18:34), 1.4-2 (2008-01-28 10:45), 1.5-0 (2008-03-14 18:02), 1.5-2 (2008-04-05 05:54), 1.5-3 (2008-04-22 11:57), 1.5-4 (2008-07-09 18:26), 1.5-5 (2009-02-05 16:12), 1.5-6 (2009-05-22 00:31), 1.5-7 (2009-07-22 13:52), 1.5-8 (2009-07-22 21:20), 1.6-0 (2009-11-18 02:15), 1.6-1 (2009-11-19 14:37), 1.6-2 (2009-11-23 11:22), 1.6-3 (2010-04-23 09:44), 1.6-4 (2010-07-09 15:48), 1.6-5 (2011-04-08 19:28), 1.7-0 (2011-07-12 19:51), 1.7-1 (2011-07-18 11:44), 1.7-2 (2011-07-23 14:28), 1.7-3 (2011-08-11 15:21), 1.7-4 (2011-08-22 09:30), 1.7-5 (2011-10-25 08:15), 1.7-6 (2011-11-02 19:40), 1.7-7 (2012-02-11 02:33), 1.7-8 (2012-10-06 18:23), 1.7-9 (2012-11-04 17:28), 1.7-10 (2013-06-14 22:39), 1.7-11 (2014-02-27 11:46), 1.7-12 (2015-03-16 19:14), 1.7-13 (2016-05-03 17:52), 1.7-14 (2016-12-19 09:38), 1.8-0 (2017-04-13 01:15), 1.8-1 (2018-01-08 10:44), 1.8-2 (2018-06-11 20:59), 1.8-3 (2018-07-16 17:57), 1.8-4 (2018-09-19 16:56), 1.8-5 (2019-03-21 11:19), 1.8-6 (2019-05-28 10:00), 1.8-7 (2020-01-10 22:20), 1.8-8 (2020-05-02 18:14), 1.8-9 (2021-03-09 17:20), 1.8-10 (2022-04-15 14:50), 1.8-11 (2022-09-17 21:50), 1.8-12 (2023-04-13 14:13), 1.8-13 (2025-02-22 11:51), 1.8-14 (2025-04-10 08:40)

Other packages that cited zoo R package

View zoo citation profile

Other R packages that zoo depends, imports, suggests or enhances

View zoo dependency map

Complete documentation for zoo

View documentation PDF

Functions, R codes and Examples using the zoo R package

Some associated functions: MATCH . ORDER . aggregate.zoo . as.zoo . coredata . frequency . ggplot2.zoo . index . is.regular . lag.zoo . make.par.list . merge.zoo . na.StructTS . na.aggregate . na.approx . na.fill . na.locf . na.trim . plot.zoo . read.zoo . rollapply . rollmean . window.zoo . xblocks . xyplot.zoo . yearmon . yearqtr . zoo . zooreg .
Some associated R codes: MATCH.R . ORDER.R . Ops.zoo.R . aggregate.zoo.R . as.Date.R . as.Date.ts.R . as.zoo.R . as.zoo.tis.R . barplot.zoo.R . coredata.R . ggplot2.zoo.R . index.R . index2char.R . is.regular.R . merge.zoo.R . na.StructTS.R . na.aggregate.R . na.approx.R . na.fill.R . na.locf.R . na.spline.R . na.trim.R . plot.zoo.R . read.zoo.R . rollapply.R . rollmean.R . window.zoo.R . xblocks.R . xyplot.zoo.R . yearmon.R . yearqtr.R . zoo.R . zooreg.R . zzz.R . Full zoo package functions and examples

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