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zoo (version 1.6-0)

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 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

1.6-0

License

GPL-2

Maintainer

Achim Zeileis

Last Published

November 18th, 2009

Functions in zoo (1.6-0)

coredata

Extracting/Replacing the Core Data of Objects
ORDER

Ordering Permutation
zooreg

Regular zoo Series
plot.zoo

Plotting zoo Objects
rollapply

Apply Rolling Functions
na.locf

Last Observation Carried Forward
rollmean

Rolling Means/Maximums/Medians
is.regular

Check Regularity of a Series
na.trim

Trim Leading/Trailing Missing Observations
yearqtr

An Index Class for Quarterly Data
merge.zoo

Merge Two or More zoo Objects
make.par.list

Make a List from a Parameter Specification
aggregate.zoo

Compute Summary Statistics of zoo Objects
window.zoo

Extract/Replacing the Time Windows of Objects
frequency<-

Replacing the Index of Objects
read.zoo

Reading and Writing zoo Series
MATCH

Value Matching
lag.zoo

Lags and Differences of zoo Objects
na.approx

Replace NA by Interpolation
as.zoo

Coercion from and to zoo
yearmon

An Index Class for Monthly Data
index

Extracting/Replacing the Index of Objects
xyplot.zoo

Plot zoo Series with Lattice
zoo

Z's Ordered Observations