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zoo (version 1.4-0)

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

562,997

Version

1.4-0

License

GPL

Maintainer

Achim Zeileis

Last Published

April 10th, 2025

Functions in zoo (1.4-0)

ORDER

Ordering Permutation
yearmon

An Index Class for Monthly Data
is.regular

Check Regularity of a Series
xyplot.zoo

Plot zoo Series with Lattice
make.par.list

Make a List from a Parameter Specification
coredata

Extracting/Replacing the Core Data of Objects
lag.zoo

Lags and Differences of zoo Objects
merge.zoo

Merge Two or More zoo Objects
frequency<-

Replacing the Index of Objects
read.zoo

Reading and Writing zoo Series
window.zoo

Extract/Replacing the Time Windows of Objects
na.trim

Trim Leading/Trailing Missing Observations
yearqtr

An Index Class for Quarterly Data
as.zoo

Coercion from and to zoo
rollapply

Apply Rolling Functions
index

Extracting/Replacing the Index of Objects
plot.zoo

Plotting zoo Objects
na.approx

Replace NA by Interpolation
zooreg

Regular zoo Series
MATCH

Value Matching
aggregate.zoo

Compute Summary Statistics of zoo Objects
rollmean

Rolling Means/Maximums/Medians
na.locf

Last Observation Carried Forward
as.Date.numeric

Date Conversion Functions from Numeric, Integer and ts Objects
zoo

Z's Ordered Observations