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zoo (version 1.6-4)

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

1.6-4

License

GPL-2

Maintainer

Achim Zeileis

Last Published

July 9th, 2010

Functions in zoo (1.6-4)

na.locf

Last Observation Carried Forward
frequency<-

Replacing the Index of Objects
as.zoo

Coercion from and to zoo
coredata

Extracting/Replacing the Core Data of Objects
yearmon

An Index Class for Monthly Data
merge.zoo

Merge Two or More zoo Objects
window.zoo

Extract/Replacing the Time Windows of Objects
na.approx

Replace NA by Interpolation
rollmean

Rolling Means/Maximums/Medians
zooreg

Regular zoo Series
ORDER

Ordering Permutation
xblocks

Plot contiguous blocks along x axis.
na.aggregate

Replace NA by Aggregation
make.par.list

Make a List from a Parameter Specification
xyplot.zoo

Plot zoo Series with Lattice
plot.zoo

Plotting zoo Objects
is.regular

Check Regularity of a Series
MATCH

Value Matching
aggregate.zoo

Compute Summary Statistics of zoo Objects
zoo

Z's Ordered Observations
index

Extracting/Replacing the Index of Objects
read.zoo

Reading and Writing zoo Series
rollapply

Apply Rolling Functions
yearqtr

An Index Class for Quarterly Data
na.trim

Trim Leading/Trailing Missing Observations
lag.zoo

Lags and Differences of zoo Objects