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zoo (version 1.7-0)

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

1.7-0

License

GPL-2

Maintainer

Achim Zeileis

Last Published

July 12th, 2011

Functions in zoo (1.7-0)

coredata

Extracting/Replacing the Core Data of Objects
frequency<-

Replacing the Index of Objects
yearqtr

An Index Class for Quarterly Data
xyplot.zoo

Plot zoo Series with Lattice
MATCH

Value Matching
na.approx

Replace NA by Interpolation
plot.zoo

Plotting zoo Objects
zoo

Z's Ordered Observations
read.zoo

Reading and Writing zoo Series
as.zoo

Coercion from and to zoo
window.zoo

Extract/Replacing the Time Windows of Objects
rollapply

Apply Rolling Functions
na.fill

Fill NA or specified positions.
merge.zoo

Merge Two or More zoo Objects
na.trim

Trim Leading/Trailing Missing Observations
xblocks

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

Make a List from a Parameter Specification
ORDER

Ordering Permutation
rollmean

Rolling Means/Maximums/Medians
is.regular

Check Regularity of a Series
na.StructTS

Fill NA or specified positions.
yearmon

An Index Class for Monthly Data
lag.zoo

Lags and Differences of zoo Objects
aggregate.zoo

Compute Summary Statistics of zoo Objects
index

Extracting/Replacing the Index of Objects
zooreg

Regular zoo Series
na.aggregate

Replace NA by Aggregation
na.locf

Last Observation Carried Forward