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zoo (version 1.0-4)

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

584,598

Version

1.0-4

License

GPL

Maintainer

Achim Zeileis

Last Published

April 10th, 2025

Functions in zoo (1.0-4)

aggregate.zoo

Compute Summary Statistics of zoo Objects
MATCH

Value Matching
ORDER

Ordering Permutation
as.zoo

Coercion from and to zoo
zooreg

Regular zoo Series
yearmon

An Index Class for Monthly Data
lag.zoo

Lags and Differences of zoo Objects
yearqtr

An Index Class for Quaterly Data
plot.zoo

Plotting zoo Objects
frequency<-

Replacing the Index of Objects
na.locf

Last Observation Carried Forward
merge.zoo

Merge Two or More zoo Objects
read.zoo

Read zoo Series via read.table
is.regular

Check Regularity of a Series
as.Date.numeric

Date Conversion Functions from Numeric, Integer and ts Objects
na.approx

Replace NA by Interpolation
window.zoo

Extract/Replacing the Time Windows of Objects
coredata

Extracting/Replacing the Core Data of Objects
zoo

Z's Ordered Observations
rollmean

Rolling Means/Maximums/Medians
rapply

Apply Rolling Functions
index

Extracting/Replacing the Index of Objects