zoo v1.2-2


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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
coredata Extracting/Replacing the Core Data of Objects
xyplot.zoo Plot zoo Series with Lattice
read.zoo Read zoo Series via read.table
index Extracting/Replacing the Index of Objects
is.regular Check Regularity of a Series
merge.zoo Merge Two or More zoo Objects
as.Date.numeric Date Conversion Functions from Numeric, Integer and ts Objects
na.locf Last Observation Carried Forward
rollapply Apply Rolling Functions
MATCH Value Matching
zoo Z's Ordered Observations
na.approx Replace NA by Interpolation
rollmean Rolling Means/Maximums/Medians
make.par.list Make a List from a Parameter Specification
plot.zoo Plotting zoo Objects
yearqtr An Index Class for Quarterly Data
aggregate.zoo Compute Summary Statistics of zoo Objects
na.trim Trim Leading/Trailing Missing Observations
ORDER Ordering Permutation
frequency<- Replacing the Index of Objects
yearmon An Index Class for Monthly Data
as.zoo Coercion from and to zoo
zooreg Regular zoo Series
lag.zoo Lags and Differences of zoo Objects
window.zoo Extract/Replacing the Time Windows of Objects
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Date 2006-12-18
LazyLoad yes
License GPL
Packaged Mon Dec 18 02:04:16 2006; zeileis

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