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zoo (version 1.6-5)

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

1.6-5

License

GPL-2

Maintainer

Achim Zeileis

Last Published

April 8th, 2011

Functions in zoo (1.6-5)

MATCH

Value Matching
is.regular

Check Regularity of a Series
yearmon

An Index Class for Monthly Data
index

Extracting/Replacing the Index of Objects
merge.zoo

Merge Two or More zoo Objects
read.zoo

Reading and Writing zoo Series
ORDER

Ordering Permutation
yearqtr

An Index Class for Quarterly Data
window.zoo

Extract/Replacing the Time Windows of Objects
na.locf

Last Observation Carried Forward
zooreg

Regular zoo Series
frequency<-

Replacing the Index of Objects
rollapply

Apply Rolling Functions
coredata

Extracting/Replacing the Core Data of Objects
zoo

Z's Ordered Observations
lag.zoo

Lags and Differences of zoo Objects
aggregate.zoo

Compute Summary Statistics of zoo Objects
as.zoo

Coercion from and to zoo
xyplot.zoo

Plot zoo Series with Lattice
xblocks

Plot contiguous blocks along x axis.
make.par.list

Make a List from a Parameter Specification
rollmean

Rolling Means/Maximums/Medians
plot.zoo

Plotting zoo Objects
na.approx

Replace NA by Interpolation
na.aggregate

Replace NA by Aggregation
na.trim

Trim Leading/Trailing Missing Observations