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zoo (version 1.0-6)

Z's ordered observations

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 with ts and base R by providing methods to extend standard generics.

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Version

Install

install.packages('zoo')

Monthly Downloads

821,957

Version

1.0-6

License

GPL

Maintainer

Achim Zeileis

Last Published

December 15th, 2025

Functions in zoo (1.0-6)

MATCH

Value Matching
zoo

Z's Ordered Observations
is.regular

Check Regularity of a Series
coredata

Extracting/Replacing the Core Data of Objects
yearqtr

An Index Class for Quaterly Data
as.zoo

Coercion from and to zoo
rollmean

Rolling Means/Maximums/Medians
lag.zoo

Lags and Differences of zoo Objects
na.trim

Trim Leading/Trailing Missing Observations
na.locf

Last Observation Carried Forward
window.zoo

Extract/Replacing the Time Windows of Objects
frequency<-

Replacing the Index of Objects
read.zoo

Read zoo Series via read.table
yearmon

An Index Class for Monthly Data
na.approx

Replace NA by Interpolation
ORDER

Ordering Permutation
plot.zoo

Plotting zoo Objects
merge.zoo

Merge Two or More zoo Objects
rapply

Apply Rolling Functions
zooreg

Regular zoo Series
aggregate.zoo

Compute Summary Statistics of zoo Objects
index

Extracting/Replacing the Index of Objects
as.Date.numeric

Date Conversion Functions from Numeric, Integer and ts Objects