zoo v1.2-1


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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
MATCH Value Matching
coredata Extracting/Replacing the Core Data of Objects
merge.zoo Merge Two or More zoo Objects
is.regular Check Regularity of a Series
frequency<- Replacing the Index of Objects
as.Date.numeric Date Conversion Functions from Numeric, Integer and ts Objects
zooreg Regular zoo Series
lag.zoo Lags and Differences of zoo Objects
na.trim Trim Leading/Trailing Missing Observations
index Extracting/Replacing the Index of Objects
yearqtr An Index Class for Quarterly Data
read.zoo Read zoo Series via read.table
ORDER Ordering Permutation
window.zoo Extract/Replacing the Time Windows of Objects
as.zoo Coercion from and to zoo
make.par.list Make a List from a Parameter Specification
na.locf Last Observation Carried Forward
aggregate.zoo Compute Summary Statistics of zoo Objects
rollapply Apply Rolling Functions
rollmean Rolling Means/Maximums/Medians
zoo Z's Ordered Observations
xyplot.zoo Plot zoo Series with Lattice
yearmon An Index Class for Monthly Data
plot.zoo Plotting zoo Objects
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Date 2006-09-20
LazyLoad yes
License GPL
Packaged Tue Sep 19 18:51:39 2006; zeileis

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