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zoo (version 1.7-6)

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

562,997

Version

1.7-6

License

GPL-2

Maintainer

Achim Zeileis

Last Published

November 2nd, 2011

Functions in zoo (1.7-6)

frequency<-

Replacing the Index of Objects
merge.zoo

Merge Two or More zoo Objects
rollapply

Apply Rolling Functions
lag.zoo

Lags and Differences of zoo Objects
MATCH

Value Matching
coredata

Extracting/Replacing the Core Data of Objects
xblocks

Plot contiguous blocks along x axis.
zoo

Z's Ordered Observations
plot.zoo

Plotting zoo Objects
zooreg

Regular zoo Series
make.par.list

Make a List from a Parameter Specification
as.zoo

Coercion from and to zoo
na.approx

Replace NA by Interpolation
aggregate.zoo

Compute Summary Statistics of zoo Objects
is.regular

Check Regularity of a Series
window.zoo

Extract/Replacing the Time Windows of Objects
index

Extracting/Replacing the Index of Objects
yearmon

An Index Class for Monthly Data
na.StructTS

Fill NA or specified positions.
ORDER

Ordering Permutation
na.trim

Trim Leading/Trailing Missing Observations
rollmean

Rolling Means/Maximums/Medians
na.locf

Last Observation Carried Forward
na.fill

Fill NA or specified positions.
yearqtr

An Index Class for Quarterly Data
na.aggregate

Replace NA by Aggregation
read.zoo

Reading and Writing zoo Series
xyplot.zoo

Plot zoo Series with Lattice