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zoo (version 1.7-7)

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

1.7-7

License

GPL-2

Maintainer

Achim Zeileis

Last Published

February 11th, 2012

Functions in zoo (1.7-7)

na.trim

Trim Leading/Trailing Missing Observations
na.StructTS

Fill NA or specified positions.
zooreg

Regular zoo Series
as.zoo

Coercion from and to zoo
ORDER

Ordering Permutation
window.zoo

Extract/Replacing the Time Windows of Objects
index

Extracting/Replacing the Index of Objects
frequency<-

Replacing the Index of Objects
na.aggregate

Replace NA by Aggregation
na.fill

Fill NA or specified positions.
plot.zoo

Plotting zoo Objects
aggregate.zoo

Compute Summary Statistics of zoo Objects
na.approx

Replace NA by Interpolation
is.regular

Check Regularity of a Series
rollapply

Apply Rolling Functions
coredata

Extracting/Replacing the Core Data of Objects
read.zoo

Reading and Writing zoo Series
na.locf

Last Observation Carried Forward
MATCH

Value Matching
make.par.list

Make a List from a Parameter Specification
yearqtr

An Index Class for Quarterly Data
zoo

Z's Ordered Observations
yearmon

An Index Class for Monthly Data
lag.zoo

Lags and Differences of zoo Objects
xblocks

Plot contiguous blocks along x axis.
merge.zoo

Merge Two or More zoo Objects
rollmean

Rolling Means/Maximums/Medians
xyplot.zoo

Plot zoo Series with Lattice