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zoo (version 1.7-3)

S3 Infrastructure for Regular and Irregular Time Series (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

1.7-3

License

GPL-2

Maintainer

Achim Zeileis

Last Published

August 11th, 2011

Functions in zoo (1.7-3)

merge.zoo

Merge Two or More zoo Objects
na.trim

Trim Leading/Trailing Missing Observations
plot.zoo

Plotting zoo Objects
na.locf

Last Observation Carried Forward
rollmean

Rolling Means/Maximums/Medians
zooreg

Regular zoo Series
na.approx

Replace NA by Interpolation
yearmon

An Index Class for Monthly Data
coredata

Extracting/Replacing the Core Data of Objects
as.zoo

Coercion from and to zoo
window.zoo

Extract/Replacing the Time Windows of Objects
na.StructTS

Fill NA or specified positions.
rollapply

Apply Rolling Functions
aggregate.zoo

Compute Summary Statistics of zoo Objects
make.par.list

Make a List from a Parameter Specification
zoo

Z's Ordered Observations
read.zoo

Reading and Writing zoo Series
frequency<-

Replacing the Index of Objects
ORDER

Ordering Permutation
is.regular

Check Regularity of a Series
lag.zoo

Lags and Differences of zoo Objects
xyplot.zoo

Plot zoo Series with Lattice
yearqtr

An Index Class for Quarterly Data
xblocks

Plot contiguous blocks along x axis.
na.aggregate

Replace NA by Aggregation
na.fill

Fill NA or specified positions.
MATCH

Value Matching
index

Extracting/Replacing the Index of Objects