zoo v1.5-5


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by Achim Zeileis

Z's ordered observations

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 with ts and base R by providing methods to extend standard generics.

Functions in zoo

Name Description
na.approx Replace NA by Interpolation
ORDER Ordering Permutation
read.zoo Reading and Writing zoo Series
plot.zoo Plotting zoo Objects
make.par.list Make a List from a Parameter Specification
merge.zoo Merge Two or More zoo Objects
lag.zoo Lags and Differences of zoo Objects
is.regular Check Regularity of a Series
aggregate.zoo Compute Summary Statistics of zoo Objects
rollmean Rolling Means/Maximums/Medians
na.trim Trim Leading/Trailing Missing Observations
coredata Extracting/Replacing the Core Data of Objects
as.Date.numeric Date Conversion Functions from Numeric, Integer and ts Objects
as.zoo Coercion from and to zoo
zooreg Regular zoo Series
zoo Z's Ordered Observations
xyplot.zoo Plot zoo Series with Lattice
yearmon An Index Class for Monthly Data
index Extracting/Replacing the Index of Objects
frequency<- Replacing the Index of Objects
rollapply Apply Rolling Functions
na.locf Last Observation Carried Forward
yearqtr An Index Class for Quarterly Data
window.zoo Extract/Replacing the Time Windows of Objects
MATCH Value Matching
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Last month downloads


Date 2009-02-05
LazyLoad yes
License GPL-2
URL http://R-Forge.R-project.org/projects/zoo/
Packaged Thu Feb 5 16:09:38 2009; zeileis
Repository CRAN
Date/Publication 2009-02-05 15:12:19

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